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题目
He broke his right leg ______ he was playing football.A、sa B、while C、because D、since
He broke his right leg ______ he was playing football.
A、sa B、while C、because D、since
A是as

提问时间:2020-07-25

答案
选B
while后面跟的是过去进行时,强调的是他在踢足球的同时,伤到了右腿.
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