Question

The teacher said“ ________ a great pity that some students don’t realize the value of time．”

[　　]

A．

This is

B．

That is

C．

There is

D．

It is

Answer 1

答案：D
解析：

只有it才能代替后面的句子。语意为：老师说：一些学生意识不到时间的价值，这是非常悲哀的。