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They ________ often _______to be careful before _______the road.
A.are, told, crossB.are, told, acrossC.are, telling, crossingD.are, told; crossing
D
D“他們經常被告訴過馬路時要小心!保鶕湟獾弥,考查的是被動語態(tài)。before在此為介詞,后加doing,故選D。
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