Past tense (一般过去时)

1.want____wanted
2.call_____called
3.listen _____listened
4.watch_____watched
5.play______played
6.wash _____washed
7.surf_____surfed
8.water______watered 9.paint______painted
10.clean____cleaned 11.visit____visited
12.jump______jumped
13.dance_______danced
14.is_____was
15.are______were
16.go________went
17.do--did
18.have_____had
19.throw -- threw