He knows a lot about Egypt.I heard he( )there before. A.has been B.has gone C.had been.

分类: 作业答案 • 2022-02-15 20:39:00

问题描述：

答

c 过去完成时

答

C
去过

答

C.had been
前面主句过去式，后面也要用过去时态

答

C.had been