Question

They ________ often _______to be careful before _______the road.

A. are, told, cross
B. are, told, across
C. are, telling, crossing
D. are, told; crossing

Answer 1

答案D
D“他们经常被告诉过马路时要小心。”，根据句意得知，考查的是被动语态。before在此为介词，后加doing，故选D。