Question

【题目】— How long did you stay at the airport?

—I stayed there Bob came to pick me up, for about two hours.

A. since B. after C. till D. while

Answer 1

【答案】C

【解析】试题分析：句意：——你呆在机场多长时间了？——我呆子那直到鲍勃来接我，大约2个小时。Since自从； B. After在……之后；C. Till直到。结合语境，故选C。