I think it is( 以d开头的单词) for people to do that.

问题描述:

I think it is( 以d开头的单词) for people to do that.

difficult

I think it is demand for people to do that。
我认为这是要求人们去做那件事。

以D开头的形容词,在句意上解释得通的就行了

difficult/dangerous

difficult 困难的