Question

【题目】一 A stranger is walking ahead of us.
一 No. It's not a stranger. It's Mike's father.
A.in front of
B.behind
C.in the middle of

Answer 1

【答案】A
【解析】句意：——一个陌生人走在我们前面。——不，那不是陌生人，那是Mike的爸爸。ahead of在……前面；in front of在……前面；behind在……后面；in the middle of在……中间。故选A。