1)you and your friends are learning the english )

1)You and your friends are learning the English language .
2)In the picture gallery you can see works by great painters.
3)Are there any talented singers in your class?
4)A lot of Russian scientist began their careers as pilots.
5)My best friend is my brave/kind, he lives next door to me.
6)Ron's grandfather is a talented , he is famous for his works.
7)You can't become a cosmonaut if you are not brave .
8)Please be kind and help me with my bags.

When I was almost 1 year old - в ед. числе. В этом же предложении, если уж "мои родители говоряТ", тогда "My parents say". Далее, здесь же, не думаю что надо использовать продолженное.
либо так если используем when,
My parents say that when I was almost 1 year old when they gave me pencils and paper for drawing,
I was banging rhytm of the music which I heard lately.
либо так, если не используем:
My parents say that when I was almost 1 year old they gave me pencils and paper for drawing but I banged rhytm of the music which I heard lately.
Because of it - лучше That's why.
I like it because I can do it very well anyway my teachers say it. Это лучше разделить на 2: I like it because I can do it very well. At least my teachers say it.

Ещё подумаю, наверняка не всё))

ОПРЕДЕЛИТЕ ЧЕМ ЯВЛЯЕТСЯ ИНФИНИТИВ (сказуемым, определением, обстоятельством и т. д.)

1. The public corporation is an attempt to obtain (определение) a satisfactory compromise between public responsibility and commercial efficiency.

2. The main purpose of the public corporation is to provide (часть составного именного сказуемого) an efficient public service at a reasonable price.

3. The state has decided to transfer (дополнение) the ownership of an industry from the private sector to the public sector.