有效制约和监督政府权力的关键是
It is in Qingdao _____ you’re going to pay a visit to _____ this kind of washing machine is produced.
The movie The Pursuit of Happiness is _______from the true story of Chris Gardner.
It’s required that the students__ mobile phones in their school, so seldom _ them using one.
_____ a reply, he decided to write again.
My TV has ________so I can't watch it and I don't know how to kill time.