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As a rule, you can borrow only two books in the library.A.at one timeB.at a time

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As a rule, you can borrow only two books in the library.A.at one timeB.at a time

As a rule, you can borrow only two books ______ in the library.

A.at one timeB.at a timeC.in no timeD.at times

试题答案

B

解析