I feel like _________ a long walk. Would you like _______ with me?
---What’s ______population of China?---China has_____ population of 1.3 billion.
Taking this medicine, if ________, will certainly do damage to your health, as the doctor advises.
However _______, it’s worth it and I’ll get it .
—_______ do you like to fly, economy or first class?—Economy, I think.
After the heavy mudslide happened in Sichuan, hundreds of newspaper reporters were sent to ____ the natural disaster.