Question

【题目】When you ______ the road, please watch both sides and be careful.

A. go across B. crossed C. crossing D. go acrossing

Answer 1

【答案】A

【解析】

句意“当你过马路时，请看两边并小心”。cross为动词，根据句意可知，不表示一般过去式，排除B；空处作谓语，排除C；across为介词，go across穿过，故选A。