—I don't know if Sam ______ tomorrow.—Don't worry. I will tell you as soon as he ______.A. comes; will comeB. will come; comesC. will come; will come
---- __________________? -----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.