33.In the past few years,traffic problems (become) ________ more and more serious.
填were becoming
人气:381 ℃ 时间:2020-02-04 01:56:21
解答
have become (过去完成时态)
翻译:在过去几年,交通问题越来越严重了.填were becoming 不对吗?不对,were becoming 是过去进行时态。是过去某一时间,正在进行。好的,明了了,这里是一段时间,谢谢你,达人。
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