I can write an email about my class.

6) Have you written a letter to your friend? I haven't written a letter to my friend yet.

Has the bus turned to the right? The bus hasn't turned to the right yet.

Has she put on her scarf? She hasn't put on her scarf yet.

Have the girls washed all the plates? The girls haven't washed all the plates yet.

Have we been here many times? We haven't been here many times.

7) Have you ever written a letter to your friend? - I have never written a letter to my friend.

Has the boy ever ridden a horse? The boy has never ridden a horse.

Has she ever put on your scarf? She has never put on your scarf.

Have the girls ever washed all the plates? The girls have never washed all the plates.

Have you ever been here? We have never been here.

Объяснение:

2. You must to rewrite your essay.
3. You must to be on time
4. Frank may be in his room.
5. Can you go to the cinema this evening?
6. I’m certain he can’t be with bill. He just called me
7. She can save enough money to buy a new car.
8. you must discuss the problem with your parents.
9.i’m only on my way out. Must i get you anything?
10. You mustn’t park here.
11. You can borrow my bike.
12. He must wear a uniform at work.
13.Can you help me with the preparations?
14. You should go home now before it starts raining.
15. Can i use your laptop?