问题

They found _______very hard to move the stone.
A:it
B:its
C:this
D:that
B:its
C:this
D:that
正确答案是:
同类题型
_____ have you been to Beijing? — Twice. [ ]
I met Jim yesterday, we _______ each other since _______ from the university.
If it _____________ tomorrow, we’ll have a picnic.
Let’s go hiking ______ staying at home, shall we? — A good idea. [ ]
Here at the door stood a girl about the same height _____. [ ]