Pollution poses a threat to the continued existence of this species.
A. strike
B. creates
C. vanish
D. peddle
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Those pesky salesmen always call at dinner time.
A. irritating
B. annoying
C. tiring
D. neutralize
The terrain gave little scope for defence.
A. sprain
B. strain
C. ground
D. mud
阅读下面的句子从A、B、C、D三个选项中选出一个能填入空白处的选项。The job would require that ______ at 7 o'clock every morning.
A. he will be at the factory
B. he be at the factory
C. he was at the factory
D. he has been at the factory
Your advice that she ______ till next week is reasonable.
A. will wait
B. is going to wait
C. waits
D. wait
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