Question

【题目】Look right and left before you ________ the road
A.across
B.cross
C.through

Answer 1

【答案】B
【解析】句意：在你过马路前要左右看。across是介词，横穿；cross是动词，横过；through是介词，从内部穿过。从句中缺谓语动词，故选B。