это очень СРОНО нужно зделать отрицательные предложения​ ">

1. They aren't having lunch.

2. She isn't doing housework.

3. He isn't having a shower.

4. They aren't playing football.

5. Dog isn't barking.

6. Masha isn't reading magazines.

7. Marina isn't wearing skirts.

8. They aren't visiting their parents.

9. Kris isn't working.

10. She isn't sitting on a sofa.

Объяснение:

Т.к. это отрицательные предложения, то к "to be" добавляется not: is+not=isn't, am+not=am not, are+not=aren't.

1. were shown

2. are developed

3. is being discussed

4. is being built

5. are devoted

6. is known

7. are being prepared

8. were done

9. was being cooked

10. are being sold 

there is somebody in the office. в конторе кто-то есть. is there anybody at home? дома кто-нибудь есть? i saw nobody in the garden. я никого не видел в саду. there is something wrong with him. с ним что-то случилось. he can do anything for you. он сделает для тебя все, что угодно.