根据汉语提示或用所给动词的正确形式填空

21.am doing
22.is running
23.are singing
24.are having
26.are going
27.There are
28.are running
29.are flying
30.are sitting
31.are talking
32.are playing games
33.are standing
34.are watching
35.are singing
1.playing
2.to play
3.be
4.eat
12.playing
13.finish,doing