My sister is only two years old, and I have to _____ her on Sunday.A.look forB.look afterC.look likeD.look at
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B解析试题分析：look for寻找；look after照顾；look like看起来像……；look at看。句意：我妹妹只有两岁，我星期日不得不照看她。考点：短语辨析
点评：解答此类题型的要点是了解各个短语的基本含义及用法的不同，同时注意其表示多个含义的现象，然后结合语境选择合适