内容正文:
1BU2 Animals
I. Grammar Directions: Choose the best answer to complete the sentence.
1. He transplanted the little tree to the garden _______it was the best time for it.
A. where B. when C. that D. which
2. _______you understand this rule, you’ll have no further difficulty.
A. While B. Once C. Though D. Unless
3. It will not be long ________man can harness the solar energy and make it serve mankind.
A. since B. before C. when D. after
4. The girl could sense things with her fingers, this ability ceased, _______her hands were wet.
A. the moment when B. the moment C. in that moment D. before
5. A man escaped from the prison last night. It was a long time ____the guards discovered what had happened.
A. before B. until C. since D. when
6. _______he entered the university, his English has been much improved.
A. Before B. After C. When D. Since
7. You’ll succeed in time _______you study hard.
A. unless B. as long as C. even if D. as though
8. The more civilized man