【典型例题】
1. Mary and Joe go to the Shopping Center ___________ .
a. once a week b. in a week c. next week d. for a week
2. Be quiet! The baby ________ （sleep）in the next room.
3. Dick will pass the message on to your sister as soon as he ______ （meet）her in her office tomorrow.
4. The bell for the class rang while they ___________ （play）on the playground.
5. Lucy said it ___________ （rain）later on.
Keys：1. a 2. is sleeping 3. meets 4. were playing 5. would rain
6. The Chinese people ____（work）hard to make their country stronger and more beautiful.
7. He’ll write to you as soon as he _____ （arrive ）in Hainan.
8. The students of Class One ___（have）a meeting from three to five yesterday afternoon.
9. The sky is black. It ____ （rain）, I’m afraid.
10. If it ___（not snow）tomorrow, we’ll go skating.
Keys：6. work 7. arrives 8. had 9. will rain 10. doesn’t snow
11. Mr. and Mrs. Green____（travel）to the south of China next week, aren’t they?
12. I___（not see）the film with you because I’ve seen it already.