Question

a meeting will be over that time

You should come ___2:30,if you come 10 minutes__that time ,the meeting will be over
A at;beforeB at; after C after ;berore

Answer 1

B
你应该在2:30来,如果你迟到10分带旦薯钟,会议将会结束.

另外,题迟丛目有些问题,第一句话后应该用蠢者句号.即：
You shoud come at 2:30. If you come 10 minutes after that time, the metting will be over.