问题
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
B:before
C:when
D: since
正确答案是：
同类题型
Will you get there by _________ taxi —No, we’ll take _________ bus.
Some of us play sports our free time weekends.—Let’s play football this Sunday.
I see something lying in the corner, moving — Let me see ________.
－What’s the name? －Khulaifi. _____ I spell that for you? [ ]
The population of China is _______ than that of _______country in the world.