-- Are you sure that he will e here in time?
--- You may he will e to help us though he is very busy.
A. rely upon that
B. rely upon it that
C. rely upon what
D. rely upon it what
网友回答
A. rely upon that
(答案→)B. rely upon it that
C. rely upon what
D. rely upon it what
解析：考查it做形式主语，词组rely on后面不能直接接从句，要先接it做形式宾语，再接that从句，句意：--你确信他会准时到这儿吗？--你可以相信虽然他很忙他肯定会来帮我们的。选B。