指出下列括号内的单词的词性及汉意.

指出下列括号内的单词的词性及汉意.
1、That policeman's (waving) to you.
2、Her hair (waves) naturally.
3、The flag (waved) in the wind.

4、The radio (wave) traves faster.
5、They followed the animal's (tracks) into the moutain.
6、Where do you think you are? On a race （track)?
7、Don't ring the bell yet. Wait until I give the (sign).
8、Please (sign) your name here?
9、What are the (charges) in this hotel?
10、She took (charge) of family business when her father died.