The students played happily at the party last night.
A.has fun B.have a good time C.enjoyed themselves D.playing sports
There are more than three thousand books in the library.
A.only B.about C.less than D.over
Although the math problem is a little difficult, I want to work it out alone.
A.by ourselves B.by herself C.by myself D.by themselves
I think teenagers have the ability to make their own decisions.
A.must B.are allowed to C.may D.are able to
We should help each other.
A.one another B.good friends C.the others D.poor people
阅读下面对话，根据情景，从方框内七个选项中选出能填入对话的五个选项。
A: Hello, Peter!
B: Hello, Helen! Long time no see.
A: What are you busy doing these days?
B: 1.
A: Oh, what’s it about?
B: 2.
A: Environment? What do you actually mean?
B: I mean we have two main problems. One is that the rivers are badly polluted. The water is very dirty.
A: 3.
B: Oh, the other is that the trees in the mountains are getting fewer and fewer.
A: It’s true. We should do something to make the rivers cleaner and the mountains greener.
B: You are right. 4.
A: And next?
B: We should also plant more trees.
A: Yes. Everyone is supposed to help make a green hometown.
B: I agree with you. Everyone should play apart.
A: 5.
B:Why not? Welcome! Let’s take action.
A.It’s about our school life.
B.We’re having a new project—Green Hometown, We Are in Action.
C.Can I join you?
D.What’s the other one?
E.First, We should stop littering into the rivers and clean them.
F.Can you tell me some of the problems you have seen?
G.It’s about how to protect the environment.
