—Can I borrow your book?—________A. Yes, you can.B. It doesn’t matter.C. Sure, go ahead.
--Where is your father?--He ________ Shanghai. He’ll be back next week.
There is nobody in the room,________?
Tom asked my friend ________.
You must be very tired. Why not ________ a rest?
--What were you doing at 9 o’clock last Sunday morning?--I ________.