题目

仿照例子改写句子：MODEL :Mr Black made a new machine last year .
A new machine was invented by Mr Black .
1、Jack's father allowed him to meke his own decisions .
Jack ________________ by his father .
2、A car knocked down an old man an hour ago .
An old man ____________ by a car an hour ago .
3、Wright Brothers invented the airplane in 1930.
The airplane ____________ in 1930
4、The Chinese invented silk centuries ago .
Silk __________ by the Chinese .
5、They used the bottles for holding the milk .
The bottles __________ .

提问时间：2021-02-21

答案

1.was allowed to make his own decisions
2.was knocked down
3.was invented by Wright Brothers
4.was invented
5.were used for holding the milk by them.