一、把下列动词变成第三人称单数,现在分词,过去式和过去分词.
1.put _________ __________ __________
2.teach _________ __________ __________
3.write _________ __________ __________
4.take _________ __________ __________
5.help _________ __________ __________
6.make _________ __________ __________
7.ride _________ __________ __________
8.get _________ __________ __________
9.swim _________ __________ __________
10.leave _________ __________ __________
11.know _________ __________ __________