It has rained heavily for an hour

6) It has rained heavily for an hour 
--> It started........................
7) I have had a good English result since last month 
--> I began............. 
8) I started being able to swim when I was ten
--> I have.............................
9) When did you start learning English?
--> How long.......................
10) Nam is as tall as his order sister
--> Nam is the same...................