thêm từ để tạo thành câu hoàn chỉnh
1.it/important/keep/environment clean
2.old cả tires/recycled/make shoes/sandals
3.it/necessary/cool/burn/immediately.
4.a new shirt/bought/by mai/yesterday.
1. It is important to keep the environment clean. 2. Old car tires are recycled to make shoes and sandals.. 3. It is necessary to cool and burn immediately. 4. A new shirt was bought by Mai yesterday.