用所给单词的正确形式填空 。

1. The Blacks would like to stay in an          (expensive) hotel to save money.

2. They are going to an         (excite) place.

3.I don't think it's a good idea to travel there. It's too         (tour) there.

4. During the vacation, they        (trek) for five days along the banks of the

Mississippi.

5. This is a____(peace) summer vacation.

氨水喷嘴塞，会造成阀体上的翻版不灵活。