i left my umbrella in my office .Could you wait_____I go back to _英语解答

i left my umbrella in my office .Could you wait_____I go back to get it?
a.when b.if c.while d.before

人气：409 ℃　时间：2019-10-17 04:03:42

解答

本题正确答案是c
while 强调“在……期间”