We cannot figure out _____ quite a number of insects, birds, and animals are dyi
题型：北京高考真题难度：来源：
| We cannot figure out _____ quite a number of insects, birds, and animals are dying out. |
| [ ] |
A. that
B. as
C. why
D. when |
答案
| C |
举一反三
| You should try to get a good night"s sleep _____ much work you have to do. |
| [ ] |
A. however
B. no matter
C. although
D. whatever |
| The road is covered with snow. I can"t understand ______ they insist on going by motor-bike. |
A. why
B. whether
C. when
D. how |
— He is eager to try something he has never tried before.
— Oh, I see. That"s ____ he"s different from others. |
| [ ] |
A. when
B. where
C. how
D. what |
| Children should be instructed to put things ____ they belong in their early childhood. |
A. where
B. in which
C. to which
D. what |
| He is strict with himself and always thinks of ____ he can work well. |
A. when
B. that
C. what
D. how |
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