Who helped you work out the maths problem? A. was he B. it was who C. was it that ——青夏教育精英家教网—

摘要： Who helped you work out the maths problem? A. was he B. it was who C. was it that D. it was

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A.was he　　　B.it was who?　　　　 C.was it that　　　　D.it was

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