friends? Use the Present Perfect.

Ron - do pantomime? - How long has Ron done pantomime?

Ron and Alex - play the violin? - How long have Ron and Alex played the violin?

1. Helen - dance? -

2. Jack and Peter - play the guitar? -

3. Alex - do tricks? -

4. Children - sing? -

5. Paul - ride a horse? -

Dear Diana,
Thanks a lot for your letter. It was a real surprise. I was really pleased to hear that everything is all right with you. Sorry I haven't written for so long but I was really busy.
You asked me to tell you about my school life. Well, I started going to school at the age of seven. Now I am in my third year(здесь всё зависит от того, в каком вы классе. В моём варианте указан 3). We have five lessons every day. We have the English language, the Russian language, P.E., Handicraft and Maths. As for me, I study well and never stay at school after lessons. My mother comes and takes me home. And what about you? Do you usually stay at school after lessons? Who do you go home with?
 By the way, right now we are having spring holidays and I am enjoying myself. When do you have holidays? 
Anyway, I have to go now. My friend is waiting for me as we are going to the cinema. Hope to hear from you soon.
Lots of love,
Своё имя

Dear Diana,
Thanks a lot for your letter. It was a real surprise. I was really pleased to hear that everything is all right with you. Sorry I haven't written for so long but I was really busy.
You asked me to tell you about my school life. Well, I started going to school at the age of seven. Now I am in my third year(здесь всё зависит от того, в каком вы классе. В моём варианте указан 3). We have five lessons every day. We have the English language, the Russian language, P.E., Handicraft and Maths. As for me, I study well and never stay at school after lessons. My mother comes and takes me home. And what about you? Do you usually stay at school after lessons? Who do you go home with?
 By the way, right now we are having spring holidays and I am enjoying myself. When do you have holidays? 
Anyway, I have to go now. My friend is waiting for me as we are going to the cinema. Hope to hear from you soon.
Lots of love,
Своё имя