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TheRussianrocketdesignerhasdied.Formanyyears,he______asanimportantassistanttothefatherofSovietspaceprogram.A.servesB.wasservingC.servedD.hasserved为什么选C
题目详情
The Russian rocket designer has died. For many years, he ______ as an important assistant to
the father of Soviet space program.
A. serves
B. was serving
C. served
D. has served
为什么选C
the father of Soviet space program.
A. serves
B. was serving
C. served
D. has served
为什么选C
▼优质解答
答案和解析
C
死前,他一直以一种助手身份服务,工作.过去时
死前,他一直以一种助手身份服务,工作.过去时
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