He ______when the UFO arrived. He didn’t wake until the UFO disappeared.A.sleptB.was sleepingC.was d

题目简介

He ______when the UFO arrived. He didn’t wake until the UFO disappeared.A.sleptB.was sleepingC.was d

题目详情

He ______when the UFO arrived. He didn’t wake until the UFO disappeared.
A.sleptB.was sleepingC.was doing homeworkD.was singing
题型:单选题难度:偏易来源:不详

答案

B
考查点:宾语从句的时态。解题思路:如果从句讲述的客观事实或真理时,从句时态不受主句时态的限制,要用一般现在时。句意:他说“光比声传播的速度快”。故选C。

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