17. Type 3: Tom didn't play tennis because he broke his legs. => If...
If Tom hadn't broken his legs, he would have played tennis.
18. Type 3: I didn't go to her party because she didn't invite me. => If she...
If she had invited me, I would have come to her party.
19. If she was my daughter, I wouldn't let her drop out of school. Find one mistake in this sentence.
was => were
20. What is the other way to call "land pollution"?
Soil pollution
