______I used to go mountain—climbing every summer .A.at a timeB.at one timeC.At
题型:不详难度:来源:
______I used to go mountain—climbing every summer .A.at a time | B.at one time | C.At times | D.At the same time |
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答案
B |
解析
at a time 一次;at one time 曾经 |
举一反三
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After two hours ,they were tired _____picking cotton and had a ______. A. of ;stop B.with ;break C.for ;rest D at; pause |
I like Mr. Miner’s speech; it was clear and________ the point. |
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