1. They go hiking and swimming outside.
2. Tehran is not a healthy place to live.
3. Because Scotland is very cold.
4. Yes, it is.
VI/
1. Hung King's Temple was visited by my class last week.
2. My school is different from my sister's.
3. Hoa doesn't like fish and neither does Mrs. Quyen.
4. We haven't seen her since Christmas Day.