The children _____ a P.E.class on he playground when it suddenly began to rain.A.have B.are having C.had D.were having

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The children _____ a P.E.class on he playground when it suddenly began to rain.A.have B.are having C.had D.were having
The children _____ a P.E.class on he playground when it suddenly began to rain.
A.have B.are having C.had D.were having

The children _____ a P.E.class on he playground when it suddenly began to rain.A.have B.are having C.had D.were having
D,过去进行时

D. were having
过去进行时

答案：D. were having

译文；孩子们在操场上上体育课，但突然下起雨的时候。

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d,句子的意思是孩子们正在上课的时候，这时下起了雨，应该用过去进行时

选D
过去进行时。首先排除A和B，因为后面when引导的时间状语用的是began（begin的过去时），此句主要强调的是“在突然下雨的那一刻孩子们正在上体育课”，那时孩子们正在……所以是D。
过去进行时一定要有明确的时间状语才可以使用，比如此处的when it suddenly began to rain.希望我的回答帮助到了你^_^~...

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选D
过去进行时。首先排除A和B，因为后面when引导的时间状语用的是began（begin的过去时），此句主要强调的是“在突然下雨的那一刻孩子们正在上体育课”，那时孩子们正在……所以是D。
过去进行时一定要有明确的时间状语才可以使用，比如此处的when it suddenly began to rain.希望我的回答帮助到了你^_^~

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