--------Yes, he did. He _______his old friends for a long time.

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

解析：D。根据句中的did和yesterday，可知艾伦昨天看到了他的老朋友们，那么"很长时间没有看到老朋友了" 肯定发生在这之前，即"过去的过去"，故用过去完成时。

课堂练习

1. By yesterday morning, he ________(call) me ten times.

2. I saw Lin Feng yesterday. We ______(not meet) each other for five years.

3. I returned the book that I___________(borrow).

4. He said that he ___________(know) her well.

5. They ________(do) the work by 11 o'clock yesterday morning.

6. The pop singers ___________(leave) when I got to the music hall last night.

7. I _________ (intend) to see you but I was too busy.

8.-----What were you doing when Jim phoned you?

-------- I __________(finish) my homework and was starting to take a shower.

1. Tom was disappointed that most of the guests ______ when he ______ at the party.

　　A. left； had arrived B. left； arrived

　　C. had left； had arrived D. had left； arrived

2. We ______ four thousand new words by the end of last year.

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

3. The pen I ______ I ______ is on my desk，right under my nose.

A. think； lost B. thought； had lost C. think； had lost D. thought； have lost

4. -- Do you know our town at all?

　-- No， this is the first time I ______ here.

A. was 　 B. have been 　C. came 　 D. had been

5.When Mark opened the door, he saw a woman standing there. He _____ her before.

A. never saw B. had never seen C. never sees D. has never seen

6.The news came as no surprise to me, for I _____ of it earlier.

A. hear B. heard C. have heard D. had heard

7. I was giving a talk to a large group of people, the same talk I_______ to a dozen other groups. (2006湖南)

A. was giving B. am giving C. had given D. have given

8. John, a friend of mine, who got married only last week, spent $3,000 more than he _______ for the wedding. (2006全国II)

A. will plan B. has planned C. would plan D. had planned

翻译下列各句：

1当我到达音乐会的时侯，这名歌手已经离开了。

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