题目内容

Lots of people exercise every morning bad weather stops them.

A. if
B. unless
C. until
D. since

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Pandas are facing danger! The situation won't change humans stop killing.

A. unless
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-- It's reported that the plastic pollution is harming the ocean. I saw the report in the newspaper at breakfast. It will be worse stronger laws are made.

A. since
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A. because
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A. Until
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