根据下列句子及所给单词的首字母写出所缺单词。

1. When will you come back, Dad? I m______ you so much.

2. After the examinations, I need to take a good r______.

3. The concert last night wasn't very good. Before it ended, the theatre was almost e______.

4. There weren't enough chairs in the meeting room, so some of the students had to s______ on.

5. Tomorrow is my cousin's birthday. I'm going to buy a g______ for her.