用所给词的适当形式填空。

1. Everyone ________ (like) music.

2. There are  two ________ (watch), which one is yours?

3. Listen! Can you hear someone________ (play) the guitar in the next room?

4. Let Jeff ________ (answer) the question.

5. I really can't stand ________ (they) .

弹簧-质量-阻尼系统的阻尼力与两相对运动构件的（）成正比。