Nowadays, more and more people are addicted _______ shopping on the Net, ______a challenge to traditional department stores.
I’m calling to enquire about the position ________ in yesterday’s China Daily.
Ever since my childhood, I have dreamed of ______ a heavy snow in my hometown in winter.
As I looked at the memorial, I thought about ____ terrible disaster it was for the people in Nanjing then and ____ they were to fight the Japanese invaders.
For a moment nothing happened. Then ________ all shouting together.
How long do you think ____ the car factory launches a new model?