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5
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167
木匠森林
[A] becomes a problem of [B] more and more.
豪廷布艺
交朋友makefriends成为朋友becomefriends我们已经成为了好朋友：we‘vealreadybecomegoodfriends.好好学习，英语很有用哦。
loversea2005
Air pollution has grown up to become a social problem
老鼠笨笨
become,turn,make
易叉叉叨叨
XXX is more and more prblematic.XXX=空气污染之类,即LZ的...
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