Conjugation of verb "To cost"
Present Simple ContinuousNegative
He/She/It wasn't costing. Present Perfect ContinuousAffirmative
He/She/It's been costing.Negative
You haven't been costing.
He/She/It hasn't been costing.
You haven't been costing.
They haven't been costing.Interrogative
Has he/she/it been costing?Affirmative
He/She/It'd been costing.Negative
He/She/It hadn't been costing.
They hadn't been costing.Interrogative
Had he/she/it been costing?Negative
He/She/It won't have cost.Interrogative
Will he/she/it have cost?Negative
He/She/It wouldn't have cost.Interrogative
Would he/she/it have cost?