1.at first
2.both of them
3.both of us
4.both of you
5.be different form
6.on the other hand
7.agree to do
8.complain about
9.Which...or...?
參考答案:At first, he didn't believe it.
Both of them are from China.
Both of us speak Chinese.
Both of you are smart.
This book is different from the one on the shelf.
It is a good movie,on the one hand,it is interesting,on the other hand, it is educational.
I agree to have a party.
Don't complain about the hotel.
Which one do you like better, the red one or the green one?