Jawaban:

1-3 sudah benar

4. if that man worked harder, he could earn more money.

5. i would gladly tell you the answer if only i knew it myself.

6. if Don and i had enough money, we would buy a house.

7. if the weather was better right now, we could go for a walk.

8. that student would get much higher marks if he studied harder.

9. if Mr.Smith called me, i would explain everything to him.

10. Mr.Moore would give up teaching if he didn't enjoy it so much.

11. if i was in your place, i would accept Mr.Anderson's offer.

12. people would understand you better if you spoke more carefully.

Semoga membantu '-')b