题目内容

Tim’s mum is worried _______ her son’s eyesight as he plays online games too much.
A.forB.aboutC.withD.of
B
考查介词用法。短语:be worried about 担心…,句意:提姆的母亲很担忧她儿子的眼睛因为他网上玩游戏玩得太多。所以选B。
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