What do you usually do____ Sunday morning.
Smoking is not allowed in public places since May 1st. It may be a good chance for some people to ______ smoking.
--- I feel really tired. --- ________
—What did you say just now? —I asked __________.
—1 doubt if he ___________ in the discussion tonight. —I believe if he ____________his homework, he will join us.
This year our school is __________ than it was last year.