1、When I was in___grade,I joined a piano competition.

1、When I was in___grade,I joined a piano competition. when i was a t__,i was good at playing the piano I was playing the piano when I was reading nespaper. 单项选择 When I（）her in the hall ,she was playing the piano A.se Yesterday evening I was playing the piano when the doorbell I was a teacher when I was When I was ten years old,Istarted to piay the piano.对When I I was playing the piano when I was reading nespaper.这里到底用whe I want to enter the Piano Competition(同义句) I joined in a race .I overtook the second boy at last.I was The date when I joined the club was the 5th of August. I `ll never forget the day ___ I joined the club.a.when b.wh