it wasn't long ()he joined the job.A that B before C until D and为_英语解答

it wasn't long ()he joined the job.A that B before C until D and
为什么选B

人气：262 ℃　时间：2020-02-04 09:54:24

解答

not long before 是个词组吧,固定搭配
在他参加这个工作之前时间不是很长,也就是：没过多久他就参加这个工作了