Mary brown is an old woman изменить предложение так, чтобы оно звучало более вежливо

1)tony has been writing the letter for an hour.

2/they have been cycling for a long time.

1. been

2.

3. been

4. which subject wii you work at tonight?

5.

6. be

7.

8. she has just taken her results, is

9.

10.