Question

【题目】_ _ is really hard __ them to climb Mount Tai.

A. This, to B. It, for

C. This, for D. It, to

Answer 1

【答案】B

【解析】

试题分析：句意：对他们来说爬泰山是困难的。It is+形容词+for sb to do sth对某人来说做某事是……的。所以选B。