Question

【题目】--- Kim, give me your report by 1O am.

--- __ have you been in charge of this project?

A. Since when B. By whom

C. For what D. From where

Answer 1

【答案】A

【解析】

试题分析：句意：--- Kim, 10点前上交你的报告。---你从什么时候开始管这个项目了？ Since后加具体的时间用when表示，有Since短语一般用现在完成时，本句是现在完成时，故选A。