Ответ:

1. Those syscrapers were built by well-known architect

2. A short-length dress will be worn by my girlfriend.

3. My room is redecorated by me every summer.

4. The vegetables weren`t frozen by him

5. Badges are collected by my friend

6. Jack`s laptop will be used by him

7. A bone was eaten by my dog yesterday

Объяснение: