单项选择题

How will the government know what the air quality is（）

A. The factories will test the air every day.
B. Scientists will test it every day.
C. A report will be published.
D. They will ask homeowners.

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The High Street is so narrow that the local government has decided to（）it.

A. increase
B. lengthen
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If I knew more English, I（）for this position.

A. would apply
B. will apply
C. may have applied
D. will have applied
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