—I called you at about 8:30 last night, but nobody answered.—Oh, I ________in my office at that time.A. worked B. was working C. will work
—How long may I keep the book? —You ________ keep it for two weeks.
Please tell Tom ______ too much noise.
You must be tired now. Why not ____ a rest?
—My father is ill in hospital, I’m looking after him. —___________.
If we don’t do ______, soon giant pandas will die.