2006年九年级英语Unit9Period2课件
日期：2010-02-15 02:20
Unit 9
When was it invented?
No 11 Middle School
Period 2
把下列句子变成被动句
1 Bell invented the telephone
2 Tom bought some books yesterday
The telephone was invented by Bell
Some books were bought yesterday
3 They visited the city last year
4 Mr，
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