10. If Jake hadn't believed in ghosts, he would have gone on the trip.
11. Jane said, "John went to the hospital alone."
Katy replied, "If he had told me, I would have gone with him."
12. If you had studied, I would have brought my friends over to your house yesterday.
13. Peter asked, "Did you need help with your Math last night?"
Mary replied, "I had needed your help."
14. If someone came into the store, smile and say, "May I help you?"
15. "Here's my phone number. Call me if you need some help tomorrow."
16. If I didn't work for an accounting firm, I would work in a bank now.
17. The death rate would decrease if hygienic conditions were improved.
18. The education in Japan has undergone significant changes in recent years.
19. If there had been enough water, the rice fields could have been more productive.
20. The patient will not recover unless he has an operation.
21. If she had a thorough knowledge of English, she could have applied for the job abroad to improve her English.
22. If he agreed to go on the trip, would you have gone?
23. If I had enough money, I would go abroad to improve my English.
24. The bench would collapse if they stood on it.
25. If it is convenient, let's go out for a drink tonight.