单项选择题

No conclusion has been（） yet.

A. achieved
B. reached
C. attained
D. arrived

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单项选择题

I think you'd better （） his advice and rest for a few days.

A. to take
B. taking
C. take
D. took

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My brother, （） lives in Iceland, is coming to visit us.

A. whom
B. that
C. what
D. who

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