ex1:

1. We should reuse old things to reduce waste.

2. I haven't watched my favorite film for a long time

3. I think robots will be able to be cook meals in the future.

4. She is the prettiest girl in her family.

5. They will have an important test this Friday.

6. If she don't study harder, she will fail the exam

ex2:

1.  Although he was tired, he went to school.

2. Although it was hot, they didn't turn on the fans. 

3. I haven't seen him for 8 days.

4. She has been teaching English for 5 years.

5. If you don't be careful, you will break the vase.

6.  If you don't be quick, you will be late for school.

chúc bn học tốt ( đúng 99,98% nha, có vài câu mình sợ sai)

Ex1:

1. We should reuse old things to reduce waste.

2. I haven't watched my favourite film for a long time

3. I think robots will be able to cook meals in the  future.

4. She is the prettiest girl in her family.

5. They will have an important test this Friday.

6. If she don't study harder, she will fail the exam

Ex2:

1.  Although he was tired, he went to school.

2. Although it was hot, they didn't turn on the fans. 

3. I haven't seen him for 8 days.

4. She has started teaching English for 5 years.

5. Be careful or you will break the vase

⇒ If you don't be careful, you will break the vase.

6. Be quick or will be late for school

⇒ If you don't be quick, you will be late for school.