Yesterday the traffic was held______ for hours by a terrible accident on this stretch of t

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Yesterday the traffic was held______ for hours by a terrible accident on this stretch of the motorway.

A.in

B.up

C.to

D.on to

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。