Exercise 2: Write the second sentence so that it has similar meaning to the first one: 1. He doesn’t study hard, that’s why he gets low marks. -> If…………………………………………………………………………………………………….. 2. We couldn’t take a bath in this river because the water was too dirty.  ……………………………………………………………………………………………………… 3. Stop talking or you won’t understand the lesson. -> If …………………………………………………………………………………………………….. 4. Lam spent much time playing computer games, so he failed the last exam.  ……………………………………………………………………………………………………… 5. It rained yesterday so I didn’t go out. -> If ……………………………………………………………………………………………………. 8. The air in this area is not clean because there is so much smoke from factories.  ………………………………………