2) 1. The teacher works at the school. He teaches students.
    2. A greengrocer works at a greengrocers. He sells fruit and vegetables.
    3. A postman works at the postoffice. He takes letters to peoples houses.
    4. A waiter works at a cafe. He serves people.

3) 1. How often do you play soccer?
    2. Pam sometimes goes to the cinema on Saturdays.
    3. I usually go to the park once a week.
    
4) 1. Betty have to wash the dishes.
    2. Betty have to clean the room.
    3. Betty doesnt have to wash the dog.
    4. Betty have to do her homework.