11.　 ---Did Alan enjoy seeing old friends yesterday?

　 ---Yes, he did. He _____ his old friends for a long time. (2007年重庆卷)

A. didn’t see　 B. wouldn't see　 C. hasn't seen　 D. hadn't seen

10. If Newton lived today, he would be surprised by what ___ in science and techmology. (2007年天津卷)

A. had discovered　 B. had been discovered　 C. has discovered　 D. has been discovered

9.　 With the help of high technology, more and more new substances _____ in the past years. (2007年北京卷)

　 A. discovered　 B. have discovered　 C. had been discovered　 D. have been discovered

8.　 ---Did you tidy your room? (2007年北京卷)

　 ---No, I was going to tidy my room but I ______ visitors.

　 A. had　 B. have　 C. have had　 D. will have

7.　　　 ---It was really very kind of you to give me a lift home. (2007年北京卷)

　 ---Oh, don't mention it. I _____ past your house anyway.

　 A. was coming　 B. will come　 C. had come　 D. have

6.　 I got caught in the rain and my suit _____.　 (2007年北京卷)

　 A. has ruined　 B. has ruined　 C. has been ruined　 D. had been ruined

5.　 ---How can I apply for an online course? (2007年北京卷)

　 ---Just fill out this form and we _____ what we can do for you.

　 A. see　 B. are seeing　 C. have seen　 D. will see

4.　 ---Is there anything wrong, Bob? You look sad. (2007年全国卷II)

---Oh, nothing much. In fact, I ______ of my friends back home.

A. have just thought　 B. was just thinking　 C. would just think D. will just be thinking

3. I know a little bit about Italy as my wife and I _____ there several years ago. (2007年全国I)

　 A. are going　　 B. had been　 C. went　 D. have been

2. ---Tom,you didn't come to the party last night? (2007年全国卷II)

　 ---I ______, but I suddenly remembered I had homework to do.

　 A. had to　 B. didn't　 C. was going to　 D. wouldn't