Вживання to be

                My friend ... an engineer. He ... at work.

 ... your sister a pupil? — Yes, she ... .

... there any books on your table?         - Yes,   there    .

... your parents at home? — No, they ... not.

I ... a pupil, I ... not a student.  

                Nick ... not a student. . He ... at school now.

                  His brother ... 20. He ... at home now.      

                  These men ... drivers.

..... those women sportsmen?

These ... his newspapers. He ....a postman