1.It's very important to keep the environment clean.

2.The time machine will shown  to the public when they finish it.

4.People recycle old car tires to make shoes and sandals.

6.I haven’t spoke to her for three years

1.-) Old car tires are recycled to make shoes and sandals

A nhé bạn

D là đúng nhé!

Bờ biển dài,bị cắt xẻ mạnh tạo thành nhiều bán đảo,vũng vịnh,biển ăn sâu vào đất liền

1.collecting

2.watching

3.donate

4.flowers