CÂU ĐIỀU KIỆN (CONDITIONAL SENTENCES) (tr.525)

1. If I didn't have to work tomorrow evening, I could meet you.
2. If I knew something about plumbing, I would/ could have fixed the leak in the sink myself.
3. If Matthew enters the race, he'll probably win it.
4. If we'd/ we had bought that picture five years ago, it would be quite valuable now.
5. I wouldn't feel better now if you hadn't talked to me about my problems last night.
6. If Carol hadn't been studying, she would have answered the phone.

IV.