The students __________ to follow the rules and study hard.
-----I called you at about half past eight last night but nobody answered. -----Oh, I _____ in my office at that time.
The number of deaths will be reduced greatly if people _____ to eat more fruits and vegetables.
-----You’ve left the light on. -----Oh, so I have! _____ and turn it off.
Tom insisted that what he said _____ true, and insisted that he _____ punished.
-----Who’s the writer of this short story?, Mark Twain or Charles Dickens? -----_____. It was written by a French woman writer.