Как правильно ? at the lesson или on the lesson

возьми фото и   опиши   всю свою семью.лишних получи !  

this is my family.i have a mother,father,sister,grandmother and tow grandfathers.you can see my mother,father,sister and me on the photo.my mother's name is juliya.she is thierty-two! my father's name nick.he is thirty-eight.my sister's name liana.she is two.

and this is me.my namy is am ten.i am a pupil and i love my famely very mach.

1.i was having a stroll when i saw a car accident 2. when   dad   entered the room   mother was singing а lullaby. 3. she sat down on а chair while he was painting her portrait. 4. when   we / сотеd   from the party   he was listening to   one of his records.