EX1:

1. If we use recycled paper, we will save many trees.

2. We might be able to go to the moon for our summer holiday in 2030

3. Mark plays table tennis well.

4. Although he was tired last night, he stayed up late to watch a football match.

5. I could read an English book since I was 6.

EX2:

1. In the future, home robots will be able to do all our housework.

2. I couldn't speak until I was three years old.

3. Will robots be able to talk to us in 2030?

4. If the water is polluted, fish will die badly.

5. If you  walk to school, you will help reduce the air pollution.

Câu 1:

1. If we use recycled paper, we will save many trees.

2. We might be able to go to the moon for our summer holiday in 2030

3. Mark plays table tennis is very good

4. Although he was tired last night, he stayed up late to watch a football match.

5. I could read an English book since I was 6.

Câu 2:

1. In the future, home robots will be able to do all our housework.

2. I couldn't speak until I was three years old.

3. Will robots be able to talk to us in 2030?

4. If the water is polluted, fish will die badly.

5. If you  walk to school, you will help reduce the air pollution.