问题
How long do you think it is _____ he took up the job?— Half a year at least[ ]
A: when
B: before
C: that
D: since
B: before
C: that
D: since
正确答案是：
同类题型
______ were you born-In Shandong.
What’s up, Mum?—Your room is ________You’d better get it tidied up.[ ]
Can you tell me ________ at that time
Most supermarkets in Shanghai have stopped free plastic bags in the past few years.
___________, but your TV is going too loud.— Oh, I’m sorry. I’ll turn it down right now.