I 单项选择
1. Because of my poor English I’m afraid I can’t make myself ____.
A. understand B. to understand C. understanding D. understood
2. Most of the people ____ to the party werefamous scientists.
A. invited B. to invite C. being invited D. Inviting
3. He was disappointed to find his suggestions ____.
A. been turned down B. turned down
C.to be turned down D. to turn down
4. ____ more attention, the trees could have grown better.
A. Given B. To give C. Giving D. Havinggiven
5. The first textbooks ____ for teaching English as a foreign language came out in the 16th century.
A. having written B. to be written C. being written D. Written
6. When____ , the museum will be open to the public next year.
A. completed B. completing
C.being completed D. to be completed
