1 . Engineers ________(set) up over 15,000 sensors (传感器) nationwide and wiring them into a web. (所给词的适当形式填空)

3 . The prices of houses ________(rise) because the demand for houses is becoming greater and greater. (所给词的适当形式填空）

4 . Don’t delay! Tack ________ (wait) for you anxiously at the moment.(所给词的适当形式填空）

5 . Rain forests ______ (cut) at such a speed that they will disappear from this planet in the foreseeable future. (所给词的适当形式填空)

6 . Because the shop________, all the T-shirts are sold at half price. (close down) （所给词的适当形式填空）

7 . The camera you ________ (use) now ________ (belong) to me. （所给词的适当形式填空）

8 . Your older sister ______________(leave) tomorrow morning and you’d better get up early to see her off.

9 . Look!Our English teacher___________(eat)lunch in the cafeteria. （用单词的适当形式完成句子）

10 . Verb filling
1. I first met Tom 10 years ago. He______ (work) in a radio factory at that time.
2. According to the timetable, the aeroplane ______ (leave) at 8 o'clock in the morning.
3. —What’s that noise?
—Oh, I forgot to tell you. The new machine ______ (test).
4. Great changes ______ (take place) in my hometown in the past few years.
5. He stepped into the office, ______ (sit) down and began to fill in the forms.
6. He kept looking at her, wondering whether he ______ (see) her somewhere.
7. He promised he ______ (not make) the same mistake again.
8. This is the first time that he ______ (visit) the museum.
9. Remember to send me a photo of us next time you ________ (write) to me.
10. I know Mr Brown. We ________ (introduce) to each other at an international meeting.