Question

【题目】- ________ will your brother come back?
- I'm not sure. Maybe in a week.
A.When
B.How
C.Whether

Answer 1

【答案】A
【解析】句意：——你哥哥什么时间回来? ——我不确定。也许一个星期。根据下文Maybe in a week, 也许一个星期, 所以用时间副词, 根据选项的意思, 可知选A。