问题
It is very difficult thelittle boy carry the big box.
A:of; for
B:to; to
C:for; to
D:by; for
B:to; to
C:for; to
D:by; for
正确答案是：
同类题型
Why do you suggest we buy a new machine—Because the old one has been damaged ______
You cannot take back your words _________ they are out of your mouth
We’d better discuss everything _______ before we work out the plan
It was in the hotel _______ I stayedyesterday _______ the accident happened.
Most doctors and nurses ______ whiteclothes when they’re at work..