单项选择题

You （）your letters yourself. I would have posted them if you had asked me.

A. didn't need to post
B. don't have to post
C. needn't have posted
D. had posted

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George's daughter tried in vain to talk him （）accusing his neighbor.

A. round
B. over
C. into
D. of
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Contrary （）all advice, he started to climb the mountain during a storm.

A. on
B. at
C. to
D. against
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