【题目】He said that he had visited his teachers in the junior middle school ________.
A.two weeks before
B.last week
C.a week ago
D.before two weeks

【答案】A
【解析】考查时间状语的运用。这个句子属于过去完成时，所以排除B、C(属于过去式的表达)。before一般用在过去完成时，但before位置居后。故选A。