—Could you please give me a hand?---Sure.___________A.What is it?B.Where is it?C. It is nothing.
---- __________________?-----For two hours.
_________ does Jim surf the Internet?Once a week.
_______he is busy, ________he helps us often.
Your child is only five. Is _____necessary for you to be so strict with him?
My mother always has__________ housework to do on weekends.