—What do you think of the Eiffel Tower?
—Splendid.When I was in France,I________it.
A.have visited B.had visited
C.could visit D.visited
—What do you think of the Eiffel Tower?
—Splendid.When I was in France,I________it.
A.have visited B.had visited
C.could visit D.visited
D 考查时态。根据答句“当我在法国的时候,我去参观了”可知去参观是发生在过去的事情,故用一般过去时,即D项正确。