Помогите написать правильно.When my sister does not go to the south, we (to go) to Moscow. If my friend (to be ) at home, he will tell us what to do. We shall watch TV, when my sister (to come) home. If you (to ring ) me up, I shall tell you a secret

Вопрос школьника по предмету Английский язык

Помогите написать правильно.When my sister does not go to the south, we (to go) to Moscow.
If my friend (to be ) at home, he will tell us what to do.
We shall watch TV, when my sister (to come) home.
If you (to ring ) me up, I shall tell you a secret

Ответ учителя по предмету Английский язык

When my sister does not go to the south, we shall go to Moscow.

If my friend is at home, he will tell us what to do.

We shall watch TV, when my sister comes home.

If you ring me up, I shall tell you a secret.