补全对话（5小题，每小题2分，共10分）
根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。
A：Nowadays many rare animals are endangered I think we should build a zoo for
them.        ?
B：No, I disagree. Zoos are not suitable places for animals to live in.
A：      . If we don’t build a zoo for them, they
will be more endangered.
B：I have visited a lot of zoo. Animals there are living a terrible life.
A：         ？
B：They’re kept in ting cages and they can hardly move at all.
A：But if we don’t build a zoo for them,       ?
B：I think it is the best way to put them back to the places where they used to live.
A：        .I agree.