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