He ________ the problem ________ in his mind for a whole week before he did anything about it.?
A．switched;onB．kicked;up?
C．turned;overD．took;on?
C?
本題考查動(dòng)詞短語辨析。turn sth.over in one’s mind的意思是“仔細(xì)考慮或反復(fù)思考某事物”。?
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