Question

—Is Mary sure _______ the exam?

—I think so. She is good at math. I’m sure ______ she can pass it.

A.of passing to B.of pass, that

C.to pass, that D.to pass, of

Answer

C

【解析】

试题分析：句意：玛丽确定能通过这次考试吗？——我认为是这样。她擅长于数学。我确信她能通过。be sure to do 表示“肯定,必定(发生)”， 即说话人认为sb.一定会做某事；sb. be sure that+从句 sb.认为某事(即that后面的句子)一定会发生。故答案为C。

考点：考查be sure的用法。