1． Ballet is amazing; you go ,you are likely to find yourself going again and again.
A．as B．once C．unless D．while
1B考查状语从句的连接词。此处once应为：一旦。
2. She had just finished her homework ______ her mother asked her to practise playing the piano yesterday.
A. when B. while C. after D. since
2A考查时间状语从句的连接词。此处when就在这时。句意：昨天她刚刚完成作业这时她的母亲就让她练琴。
