To expl__n the rule найдите↑ две буквы.

The explain the rain, возможно так.

To explain the rule. Легко же..

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

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Children don’t learn while playing.

Do children learn while playing?

Dolls of wood, clay and wax weren’t also very popular with girls.

Were dolls of wood, clay and wax also very popular with girls?

Tool kids, thains, cars, trucks and garages didn’t give them an interest in engineering.

Did tool kids, thains, cars, trucks and garages give them an interest in engineering.

Both boys and girls,didn’t  love their rocking horses, and teddy bears.

Did Both boys and girls, love their rocking horses, and teddy bears?

They didn’t use mud.

Did they use mud?