问题

Have you got your new job yet, Bob?—Kind of. But the interviewer said they needed a reference from my former employer ________ they could give me a definite offer.[ ]

A: until
B: when
C: once
D: before

正确答案是：

同类题型

There is a teacher’s desk _______ of the classroom. Mr. Liu is standing _______ of it.

______ wind or rain, we always go to school on time

How is your recent trip to Sichuan?—I’ve never had ________one before.(2011·四川)

The new bridge is ________ the one built last year

It shouldn’t take long to clear up after the get-together if we all volunteer to help.—-______________. Many hands make light work.