Carsmovedveryslowlyinthe1930's,but

发布时间：2020-07-27 08:59:48

Cars moved very slowly in the 1930's,but they ________ faster than in the 1920's．A.were movingB.did moveC.had movedD.would move

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B解析do/does/did+动词原形,是强调的一种形式,据题意可推断出用过去时态。
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