【They____themathsproblemwhenIcamein.A.workedonB.wereworkingonC.wereworkingD.wereworkingfor】
2021-08-05 59次 反馈错误 加入收藏 正确率 : 100%
题目内容：
They____the maths problem when I came in.
A.worked on B.were working on C.were working D.were working for
优质解答
B.句型
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