1. If they (listen) carefully, they might hear the woodpecker.
-> If they listened carefully, they might hear the woodpecker.
2. If I had lain down on the sofa, I (fall) asleep.
-> If I had lain down on the sofa, I would have fallen asleep.
3. Ngoc could have worked as a model if she (be) taller.
-> Ngoc could have worker as a model if she had been taller.
4. The soil (not/dry out) if you water the plants regularly.
-> The soil will not dry out if you water the plants regularly.
5. If you (give) the young boy this stick, he’d hurt himself.
-> If you gave the young boy this stick, he'd hurt himself.
6. We (not/take) the wrong tram if Dzung had asked the policewoman.
-> We would not have taken the wrong trem if Dzung had asked the policewoman.
7. If the cat hides in the tree, the dog (not/find) it.
-> If the cat hides in the tree, the dog will not find it.
8. The students would have solved the problem if they (use) their textbooks.
-> The students would have solves the problem if they had used their texxtbooks.
9. If he washed his feet more often, his girlfriend (visit) him more often.
-> If he washed his feet more often, his girlfriend would visit him more often.
10. Manh (read) the newspaper if he went by train.
-> Manh would read the newspaper if he went by train.