She insisted that we the source of the river and begin our journey there.A. findB. foundC

问题补充：

She insisted that we the source of the river and begin our journey there.

A. find

B. found

C. had found

D. would find

答案：

(答案→)A. find

B. found

C. had found

D. would find

解析：考查：insist意为坚持要求，后跟从句应用虚拟语气(should ）do ，句意：她坚持要求我们应该找到水源在那开始我们的旅行。所以选A。