根据句意用适当的从属连词或关系代(副)词填空。
--Dave, turn off the TV  _____ no one is watching it.
--But it has been turned off already!  The music is from the radio.
--Why didn’t you go surfing last Sunday?
-- _____ I had a bad headache.
Don’t get off it __ the bus stops. It’s dangerous.
--Where is the comic book?
--I brought it to you __ you were in the reading room yesterday.
Jack, there is someone in the office __ would like to speak to you.
--What kind of music do you like?
--I like music __ I can sing along with.
The old man wants to live in a house _____  door is broken.
The film ____ we saw the day before yesterday is very interesting.
Do you know the student __ was praised at the meeting?
They work in a factory __ makes radio parts.