英语 状语从句 3道选择题

1、__B___her home,Janice turned on her computer and chatted online.
A on arriving B Directly she reached-------REACH的后面直接加宾语her home
2、I hadn't been watching TV for half an hour __B____my mother asked me to practice playing the piano this morning .---------WATCH先发生,然后是母亲ASK
A since B when
3、__A___Barry can't complet the work in a day,we should help him.-------SINCE是“因为,由于”
A since B while (这道题中while 也有转折的意思,为什么选since 而不是while）?
再问： 关于第一题，难道不是arrive home 吗？我记得这里home 前不加介词的，所以也可以arrive her home 啊~可以解释下吗？ 你的三道题的答案是对的~
再答： 关于第一题，如果是on ARRIVING HOME-- - -- ，就对了，arrive home ,在它们之间不需要at的参与，因为home在这里是副词-----on arriving home Directly she reached===as soon as she reached / arrived home. 如果是“到她家”，就应该是：on arriving at her home === on reaching her home