初三英语习题：1.You must thorw the broken toy away at once.（改为被动语态）

初三英语习题：
1.You must thorw the broken toy away at once.（改为被动语态）
The broken toy _____ ______ ______ ______ at once.
2.I don't know what I should do with the broken bike.（改为简单句）
I don't know what ______　______ _______ the broken bike.
3.Jenny didn't know how she could find the lost keys.（改为简单句）
Jennt didn't know _______ _______ ______ the lost keys.