—How long have you _______ the iPad?—Only two days. I will return it to Jack this afternoon.
__________ hours do you do your homework every day? Three hours every day.
_________Tom is not at home. He __________in the library.
Mr. Black is ___________to carry __________.
This man has _________ friends because he is not friendly.
Who taught them to ride bicycles? __________ They taught __________.