题目内容

___ the road, don’t forget to look both ways.

As crossing
B. While you cross
C. While crossing
D. Cross

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Chemistry is the science of substances ___ the science of energy.

A. and is physics
B. or is physics
C. and physics
D. or physics is

–Who broke the window?– ____.

A. Him
B. He
C. He broke
D. It is him

--You must obey every word of mine. ---____ I don’t?

A. How if
B. What if
C. Such as
D. Only if

I won’t go to his party next time. It couldn’t have been ____ in fact.

A. any better
B. any worse
C. so bad
D. the best

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