:I 单项选择题：（共20小题，满分20分）
1. I’ve finally finished my paper and it_____ me an entire month.
A. takes B. took C. was taken D. had taken
2. John and I_____ friends for eights years. We first got to know each other at a Christmas party. But we _____ each other a coupe of times before that.
A. had been; have met B. have been; have met C. had been; had met D. have been; had met
3. A notice was __ in order to remind the students of the changed lecture time.
A. sent up B. given up C. set up D. put up
4. Mr. Herpin is one of the foreign experts who _____ in China in the last five years.
A. works B. is working C. are working D. have been working
5. The old man has two sons, ______ are lawyers.
A. both of them B. both of who C. both of whom D. both of they
