with economic slowdown, some companies are planning to use robots to ______ human workers to reduce their labor costs.

Of all my classmates, often goes to the Internet café to kill time.

Do you usually ________ a while(一会儿) before you go to bed—Yes. Enjoying the cool air is good for my health.

The study of nearly 10,000 people showed that those who drank more than two cups of coffee or tea per day developed the disease at half the rate of those who drank _________ than one cup each day.

33．—There will be a talk show this time tomorrow．Would you go with me? —I’m sorry, but I ______ an important meeting