1. If you burn rubbish, you will produce harmful smoke. ( câu điều kiện loại 1 )

2. If we use reusable bottle, we will save a lot of money. ( câu điều kiện loại 1 )

3. If we use recycled paper, we will save trees. ( câu điều kiện loại 1 )

4. If they plant trees in the schoolyard, their school will be a greener place. ( câu điều kiện loại 1 )

1.If / burn rubbish / produce harmful smoke

=> If you burn rubbish, you will produce harmful smoke.

2. If / reuse bottles / save a lot of money

=> If you use reusable bottle, you will save a lot of money.

3.If / use recycled paper / save trees

=> If we use recycled paper, we will save trees.

4.If / plant trees in the schoolyard / school / greener place

=> If we plant trees in the schoolyard, the school will be a greener place.

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