The balance of nature is _____ at times, resulting in a number of possibly unfor
题型：期中题难度：来源：
| The balance of nature is _____ at times, resulting in a number of possibly unforeseen effects. |
A. confused
B. troubled
C. disturbed
D. harmed |
答案
举一反三
| My car _____ down again so I had to have it _____ at the garage. |
A. broken; being repaired
B. breaking; be repaired
C. breaks; repaired
D. broke; repaired |
| The new teacher is working hard in order to get his work _____ in the education circles. |
A. recognized
B. to recognize
C. being recognized
D. recognizing |
| Class _____ over,all the students rushed out of the classroom, but only Tina remained _____. |
A. be; sitting
B. been; seating
C. being; seated
D. was; sat |
| The poem _____ in 1881 described a moving story that happened on Christmas Eve. |
| [ ] |
A. written
B. being written
C. was written
D. to be written |
| _____ for breaking the vase, Lucy is very upset. |
A. Blamed
B. Blaming
C. To be blamed
D. Blame |
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