2. If Alex had listened to the questions, he wouldn't got all the answers wrong.
3. If he hadn't got all the answers wrong, the other kids wouldn't have laughed at him.
4. He wouldn't have felt really miserable, if the other kids hadn't laughed at him.
5. If he hadn't ate a huge lunch, he wouldn't have felt really miserable.
6. If he hadn't ate a huge lunch, he wouldn't have been sick later on.