高手请进（紧急啊！！！！！）

when i was a ten-yeared child, i began to read novels.

when my daughter was seven, she began to play piano.

Until he was old,he could ride a bike.

when she was only ten year old, she's been a famous pianist.

when i got home, it had been dark.

一般说“当……时候”用when句型

1 At the age of 10 I began to read novels.
2 My daughter began to play the piano when she was 7.
3 He learned to ride a bike when he was very old.
4 She became a famous pianist when she was 10.
5 When I got home it was dark.

when i was ten,i began to read novels
when my daughter was seven,she began to play the piano
till he was rather old ,he began to learn to ride the bike
when she was ten ,she had become a famous pianist
it was dark when i got back home

I started to read novel when I was 10 years old
she began to practise piano when my daughter was 7years old
He did not learn how to ride a bike until he was old
she has been a famous piano player when she was only 10
when I got home,it is dark