Bài 3: Combine the two sentences using conditional sentences.

1 . They don’t understand the problem. They won’t find a solution

-> If they ____understood the lesson they would find a solution ________.

2. He sits around too much. He isn’t fit.

-> If he ____didn’t sit around too much, he would be  fit.______.

3. She’s very thin; perhaps that’s why she feels cold so much.

-> If she __weren’t very thin, she would not feel cold so much  ___.

4. He never polishes his shoes, so he never looks smart.

-> If he _____ polished polishes his shoes,   he would  look smart.____.

5. He can’t park near his office; that’s why he doesn’t come by car.

-> If he ___ could park near his office , he would come by  car _.