题目内容

I knew Mr. Green _______I knew Mrs. Green.

A. long before
B. before long
C. long ago
D. after long

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They waited _______it was dark before leaving, ______they didn’t want anyone to see them leave.

A. since; because
B. until; as
C. unless; for
D. so; because

I will never stop _______they may not like it.

A. no matter how
B. how
C. what
D. though

Father was _______busy in working ________he often forgot rest or meals.

A. very, that
B. so, that
C. such, as
D. enough, as

We made a decision _______there would be rain, we should stay at home.

A. that
B. if
C. that if
D. whether

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