答案:had taken

3.She 　　　　　　(teach) English for five years before she came to America.

答案:had taught

4.When I woke up this morning,I found that it 　　　　　　　(stop) snowing.

答案:had stopped

5.Kate told me that it was the second time that she 　　　(visit) the Summer Palace.

答案:had visited

6.When Jim 　　　(come) to China two years ago,he found people didn't understand him at all though he 　　　　　　　(learn) some Chinese in his own country.

答案:came;had learned

7.Hardly had we got there when it 　　　(begin) to rain.

答案:began

8.I 　　　　　　　　　　(never see) such a beauty before I came to China.

答案:had never seen

9.She said she 　　　　　(see) the film before.

答案:had seen

10.By the end of last month,they 　　　　　　　　　(complete) the task.

答案:had completed

11.When I got back to the shop,my bag 　　　　　　　　(take) away by someone else.

答案:had been taken

12.No sooner 　　　　　I 　　　　　(go) out than he came to see me.

答案:had;gone

13.-Why haven't you asked her to come here?

-She　　　　　　　 (do)an important experiment when I found her and she 　　　　　　　　　(not,finish)it.

答案:was doing;hasn't finished

14.The classroom 　　　　　　　　　　(clean) before we 　　　　　(get) there yesterday.

答案:had been cleaned;got

15.When we got to the station,the train 　　　　　　　(leave).

答案:had left

16.I 　　　　　　　　(intend)to see you yesterday but I was too busy.

答案:had intended

四、单句语法填空

1.Just as I got to the school gate,I realized I 　　　　　　　　(leave) my bag in the cafe.

答案:had left

2.【高考典句】(2014·北京高考)I found the lecture hard to follow because it 　　　　　　　　(start) when I arrived.

答案:had started