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.before
C.when
D.since
答案
答案:D
—Have you known each other for long?
—Not very long, __________ we started to work in the company.
A.after
B.before
C.when
D.since
答案:D