Write the correct form of "to be".
Example We ____ in the park.1 of 10 David ____ happy. (negative)3 of 10 ____ you Spanish?4 of 10 My brother and I ____ at home. (negative)5 of 10 Peter and Mark ____ brothers.6 of 10 The cat ____ on the table.7 of 10 It ____ a very nice day.8 of 10 I ____ 13, I am 14. (negative)9 of 10 It ____ 8 o'clock.10 of 10 We ____ good friends. 
