When the man --- the museun,his friends ---- him.

问题描述:

When the man --- the museun,his friends ---- him.
A.visited,saw
B.visited,seeing
C.was visiting,was seeing
D.was visiting,saw
The answer is D.
when不是只能跟一般过去吗?它能跟过去进行时吗?

when并不是只能跟一般过去,它也能跟过去进行时