—The government should try to balance economic growth and pollution from industry.—____. It’s time to do it.

--- I haven’t got the reference book yet, but I will have a test on the subject next month.--- Don’t worry. You ________ have it by Thursday.

—May I use your computer, Mr WU?　　　—______．

---.Look! It _____be your uncle .----It_____ be him . He has gone to Xi’an.

Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.