I was woken up by a bell ringing~的语法~

1、I was woken up by a----noise last night I got a_______ when I was woken up by a noise 英语翻译I want to bed,and was woken up around midnight by a brig The door bell ＿＿when I was leaving.A.rang B.ringing C.rings The door bell _____ when I was leaving.A rang B ringing C ri I,when,bell,ringing,to,got,final,the,was,school the door bell was ringing __I was watching TV last night .A Hobo was woken up by the n___ from the next door 英语翻译One night on my travel by train I was woken by the loud 用适当的介词填空:( )he got to school,the bell was ringing. 英语翻译Ted was woken suddenly by a loud knock at front door .He I tried to wake up my wife by ringing the doorbell,请问by是什么用法