1)Because he doesn’t drive carefully, he has many accidents.
-> he
2) He often stays up late to watch football matches,so he feels very tired.
-> unless
3) Because he wastes so much time in games,he doesn’t make a good progress in his study
-> unless
4) My parents do not allow me to go , so I have to stay at home.
-> I wouldn’t
5) I am not a rich businessman and I can’t afford to buy an expensive car
-> were
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1)Because he doesn’t drive carefully, he has many accidents. -> he 2) He often stays up late to watch football matches,so he feels very tired. -> unle
By Everleigh
=>
1. He doesn’t drive carefully, so he has many accidents.
2. Unless he stayed up late to watch football matches, he wouldn’t feel tired.
3. Unless he wasted so much time in games, he would make a good progress in his study.
4. I wouldn’t have to stay at home if my parents allowed me to go.
5. Were I a rich businessman, I could afford to buy an expensive car.