题目内容
If the weather had been better, we could have had a picnic. But it_____all day.
A.rained B.rains C.has rained D.is raining
A
解析:
A If the weather had been better, we could have had a picnic.此句是对过去事情的假设,但事实上下了一天雨,根据句意,最后一句应用一般过去时,表示对过去事实的陈述。

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