I hear you have an experience in the Roya1 Air Force. Is that true？- Yes. I in the

发布时间：2020-08-17 12:32:09

--- I hear you have an experience in the Roya1 Air Force. Is that true？
--- Yes. I      in the Royal Air Force for six years.
A. served
B. had served
C. joined
D. have joined

网友回答

(答案→)A. served
B. had served
C. joined
D. have joined
解析：此题考查的是学生对动词时态及是否延续动词的掌握。
以上问题属网友观点，不代表本站立场，仅供参考！