问题
选择题
- Have you known each other for long?
- Not very long, _______ we started to work in the company.
A．after
B．since
C．when
D．before
答案
答案：B
题目分析：句意：你们彼此认识很长时间了吗？不是很长时间，自从我们开始在这个公司工作到现在。A. after 在……之后B. since 自从……C. when当D. before在……之前。根据句意及时态，故选B。