-Do you mind my opening the window?-______. Please do it now. A. Of course not. B. Yes, I do. C. Certainly
__________ 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 __________.