考研英语语法拔高题答案如下：
1. The book, which has been widely praised, ___________ in the past three years.
A. was published
B. has been published
C. is published
D. will be published
答案：B
2. ___________ in the library, he was reading a novel.
A. Having been
B. Being
C. Having
D. Being being
答案：A
3. It is essential that the project ___________ as soon as possible.
A. be completed
B. will be completed
C. was completed
D. is completed
答案：A
4. The professor, ___________ for his research on quantum physics, was invited to give a lecture.
A. known
B. knowing
C. knows
D. knowning
答案：A
5. She has been working on the project for three months, ___________ she expects to finish it by the end of this week.
A. which
B. that
C. who
D. when
答案：A
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