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There are five pairs, but I'm at a loss which to buy.? A. to be chosen B. to cho

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There are five pairs, but I'm at a loss which to buy.? A. to be chosen B. to cho

There are five pairs, but I'm at a loss which _____ to buy.?

A. to be chosen   B. to choose from?  C. to choose   D. for choosing

试题答案

B