1 if we recycle bottles and cans we will help thì envoiroment 

-> câu ĐK loại 1 

2 could you write and read when you were 6 ? 

-> thì QKĐ 

3 In 2030 , robots will be able to do many things like human 

-> will be able to : có thể làm 1 cái gì đó tron tương lai 

-> thì TLĐ 

4 we visited our grandparents in the countryside last week 

-> thì QKĐ 

EX 2 

1 plant more trees : trồng nhìu cây xanh hơn 

2 put recycling Pin in all the classroom : đặt thùng tác tái chế ở tất cả phòng học 

3 don't use plastic bags instead of use recycling shopping bags 

4 Try to reduce the amount of non-biodegradable or recyclable waste.

Bài làm nek !!!!!!!!!!!

I/Arrange the following sets of words to make meaningful sentences :

1. If we recycle bottles and cans, we wil help the environment.

2. Could you read and write when you were 6?

3. In 2030, robots will be able to do many things like human.

4. We visited our gradparents last week 

II/ You and your classmates want to make your school 'green' place. Write down 4 rules for the class members to follow.

1.Plants small trees on the classroom corners or on the wall.

2.Put a trash can in a corner of the classroom.

3.Clean the classroom everyday.

4.Punish students who litter in the classroom.