过去完成时
【巩固练习】
I.单项选择。
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.
A. think，lost B. thought，had lost
C. think，had lost D. thought，have lost
4. —Did you see Mr. Smith when you were in France？
—No, when I _____ France, he ______ to China.
A. had arrived, had gone B. arrived to, went
C. got to, had gone D. had got to, would go
5. Catherine ______ the letter before her mother came into her bedroom.
A. had written B. was written C. has written D. is writing
6．—I have bought you the books you want．
