Nowadays(overpopulation)has become a problem we have to face 中become是不是应该用became

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Nowadays(overpopulation)hasbecomeaproblemwehavetoface中become是不是应该用becameNowadays(overpopulation)hasb

Nowadays(overpopulation)has become a problem we have to face 中become是不是应该用became
Nowadays(overpopulation)has become a problem we have to face 中become是不是应该用became

Nowadays(overpopulation)has become a problem we have to face 中become是不是应该用became
不是,become的过去式为became,过去分词为become.此题中用后者,与has构成现在完成时~

nowadays nowadays 的意思是什么? in nowadays是什么意思 nowadays什么意思啊 treasure-nowadays是什么意思 nowadays 用什么提问 nowadays 怎样度 当今世界是nowadays world还是world nowadays?是不是都可以? nowadays 时态nowadays 一般用什么时态呢? Nowadays翻译成中文是什么意思? Nowadays we eat____(cook) meat. present,now,nowadays的区别 now和nowadays的区别 英语翻译The pla of nowadays? nowadays 的同义词 两个空 Today or nowadays is very happy Nowadays是什么意思,第一个达得采 与nowadays意思相同的短语