Mkji người giải giúp em từ câu 2 với ạ

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2. Her hair has just been washed.
3. The floor has already been dried by Jane. ( Không nhìn rõ động từ nên mình thay bằng dried nhé)
4. This book has been read for 2 days.
5. Our rooms have been tidied.
6. 50 films have been shown since July.
7. More trees have been cut down by farmers.
8. Forests have been destroyed by farmers.
9. The house has been swept by Huong.
10. Their homework has been done by Jane and Daisy for 2 hours.