1、the oil from ships causes sea pollution 变为被动语态2、we speak chinese in china 变为被动语态3、the workers make many kinds of machines in that factory 变为被动语态4、rice is grown in south china变为主动语态5、a lot of waste is produced by people every day变为主动语态6、pollution is not cared about by them at all 变为主动语态对划线部分（括号里）提问i haven‘t seen her （since i left for china）用at 8 yesterday evening改写句子the twins are watching tv now变为i don’t know的宾语从句who is he waiting for?用both.and.合并成一个

1.the sea pollution is caused by the oil from ships
2.Chinses is spoken by us in China
3.many kinds of machines in that factory is made by the workers
4.South China grows rice
5.people produce a lot of waste every day
6.them don't care about pollution at all
1.how long haven't you seen her
2.the twins were watching TV at 8 yesterday evening
3.i don't know whom is he waiting for
4.both Joy and Lily like volleyball.

1.The sea pollution was caused by the oil from ships.
2.Chinese was spoken by us in China.
3.Many kinds of machines(机器) in that factory was made by the the workers.
4.South China grows rice.
5.People produce a lot of waste every day.
6.They don't care about the pollution at all.
7.How long have you not seen her?
或How long haven't you seen her?
8.The twins was watching TV at 8 yesterday evening.
9.I don't know whom is he waiting for?
10.Both Joy and Lily like volleyball(排球).