Ребята, помогите с английским! Проверьте, пожалуйста, письмо. Сомневаюсь необходимо ли ставить

Ребята, помогите с английским! Проверьте, пожалуйста, письмо. Сомневаюсь необходимо ли ставить the в некоторых местах. Да и вообщем, верно ли построены предложения?
Ps Учитель придирается ко всему
Dear ...,
Thanks for your letter. It was very interesting to read.
I d like to answer your questions. We can take telephone at our school. We can use (the?) telephone at the break to call home or to sent (the?) massage. But we can t use (the?) telephone at the lessons because there are strict rulers in our school.
What is your favorite book? What are your favorite subjects? Where will you spenв your summer holidays?
I have to go to help my mum. Write me back soon.
Best wishes,
...