Conjugation of verb "To use"
Present Simple Continuous
Present Perfect Continuous
Negative
He/She/It hasn't been using.
Interrogative
Has he/she/it been using?
Negative
He/She/It hadn't been using.
Interrogative
Had he/she/it been using?
Negative
He/She/It won't have used.
Interrogative
Will he/she/it have used?
Negative
He/She/It wouldn't have used.
Interrogative
Would he/she/it have used?