1 A teacher works in a school.
He teachs students
2 A Greengroser works in a greengrocer's.
He sells fruit and vegetables.
3 A postman works in a post office. He takes letters to people's houses.
4 A waiter works in a cafe. He serves people.
Are the children doing their homework?
Are Jane and Oliver meeting friends?
Is Lilly wearing a pullover?
Must, can't, can, can't, may, must - думаю, то так.
I can help you with your homework, if you will have some problems.
You should be polite with teachers.
You must study at school, because it will help you in the future.
You should have good marks, if you want to finish th school.
You have to be with your parent in the evening
Как по мне, то ни одно из предложенных не подходит, так как в предложении должно быть только 1 отрицание, а тут получается целых 3. Но мне кажется, что больше подходит С: yes, he did't have nothing interesting.