问题

He found very difficult the math problem.

A:that；to solve
B:this；solving
C:it；to solve
D:it；solving;

正确答案是：

同类题型

The pears in my basket are smaller than _____in Jim’s.

It’s relaxing _________ the talent show.

It’s impolite to laugh at the people who are _____.[ ]

Don’t worry. I’m sure ________ there on time.

There is no doubt _____.[ ]