在空白处填写适当的话语或词语，使对话完整。

A: Hi. Peter!？

B: My school trip was great.

A: Where did you go?

B:.

A: Did you see any pandas?

B: Yes, the pandas were smart.

A:？

B: We also saw tigers, elephants and many other animals.

A: ？

B: Yes, there were. It was very crowded(拥挤的). Many people see animals there.

A:？

B: No, the gifts were too expensive.

A: Did you take any photos?

B: Of course. Look! They are so excellent.