Completa las frases con la forma correcta del verbo que se encuentra entre paréntesis.
          
            
                
                    
                    
                        
                            Ejemplo                            
                            Betty _____ (work) in a bank before she _____ (go) back to school.
                        
                        
                    
                
                
                
                    
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    1 de 10
                                    I _____ already _____ (drink) two cups of coffee by the time my husband _____ (wake up).
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    2 de 10
                                    They _____ never _____ (see) a 3D movie before 2009 when they _____ (see) "Avatar" for the first time. 
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    3 de 10
                                    She _____ (enjoy) the beach when it _____ (start) to rain.
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    4 de 10
                                    He _____ (be) healthy all his life before he _____ (have) the heart attack.
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    5 de 10
                                    I _____ (be) exhausted because I _____ (sleep, not) well.
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    6 de 10
                                    They _____ never _____ (own) a house before they _____ (buy) the house next door.
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    7 de 10
                                    Bill said that he ____ (run) in three marathons last year.
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    8 de 10
                                    _____ you ever _____ (be) to a big city before you _____ (go) to New York?
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    9 de 10
                                    Andy told us he ____ (mean) to call us for weeks.
                                
                                
                            
                        
                    
                    
                
                    
                        
                            
                                                    
                            
                                
                                    10 de 10
                                    Sarah ____ (look) for work for months when they hired her.