please come in one( ),not all together.A at a timeB at times C in_英语解答

please come in one( ),not all together.A at a timeB at times C in a time D on a

人气：442 ℃　时间：2020-06-18 02:14:04

解答

选A at a time每次一次请每次进来一个人不要一起都进来
B at times有时
C in a time 一段时间后不就
D on a time 一段时间