All of us find _____ necessary to take exercise every day.A.this B.that C.itWe find _______ impossible to get there before 8 o' clock.A.this B.that C.it这两道题有什么不同?为什么前一道选B后一道选C?

问题描述:

All of us find _____ necessary to take exercise every day.
A.this B.that C.it
We find _______ impossible to get there before 8 o' clock.
A.this B.that C.it
这两道题有什么不同?为什么前一道选B后一道选C?