1 . 选词填空
1. ________ more attention, the tree could have grown better. (Given/Giving)
2. ________ in 1636, Harvard is one of the most famous universities in the United States.(Founded/Founding)
3. When ________, the museum will be open to the public next year.(completed/completing)
4. ________ in thought, he almost ran into the car in front of him. (Lost/Having lost)
5. The research is so designed that once ________ nothing can be done to change it.(having begun/begun)
6. ________ such heavy pollution already, it may now be too late to clean up the river. (Having suffered/Suffered)
7. What’s the language ________ in Germany?(speaking/spoken)
8. The computer center, ________ last year, is very popular among the students in this school.(opened/opening)
9. The first textbooks ________ for teaching English as a foreign language came out in the 16th century.(written/being written)
10. Prices of daily goods ________ through a computer can be lower than store prices.(are bought/bought)