—What do you imagine ________ her so sad?
—Losing her new storybook.
—I'll fly to Paris on business tomorrow.
-- _______.
-Look, someone is coming．Guess who it ________ be?-I think it ________ be Tom．
-I don’t think it ________ be ________．
---How did the party ________?
---Very well, thanks.
--Brad was Jane's brother!
--_____ he reminded me so much of Jane!
— Do you know Mr Wang likes walking after supper?
— Sure．She ________ around the campus now．
-Dad, there is a snake at the gate crawling this way．
-Don’t __________, boys; there’s no danger．
-Do you allow your son to go to any Internet café on holidays?
-__________ not!