根据句意及首字母补全单词。

1. Thanks for i_________ me to your party on Sunday.

2. I should work hard to make my country r_________ and stronger.

3. When the t_________ lights are red, you must stop and wait.

4. He's p_________ his vacation to Japan this summer.

5. Tom, to take n_________ in class is a good habit for you!

柱塞（）太紧可造成柱塞过度发热.

A.密封

B.组装

C.连接

D.行程