题目内容

He tried every means to keep that kind of evens _happening again.

A. from
B. on
C. in
D. at

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_there is life on the moon is an interesting question.

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

_depends on whether we have enough money.

A. everything
B. nothing
C. all
D. that

She always thinks of how she can work well.

A. 对
B. 错

Some people dump their rubbish into the river.

A. 对
B. 错

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