主动改被动.1.They sell oranges in the shop.2.People don’t produce

主动改被动.
1.They sell oranges in the shop.
2.People don't produce oil in America.
3.How many TV sets did you sell last week?
4.Helen's parents sent her to school when she was nine.
5.We can't make the same mistake twice.

1.oranges are sold in the shop.
2.oil is not produced in America.
3.How many TV sets are sold by you last week?
4.Helen was sent by her parents to school when she was nine.
5.the same mistake cannot be made by us twice.
第12题因为是泛指 所以by them 和by people 可以省略哈.

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