Elephants would __________ soon if man was allowed to shoot as many as they wish.
Scientists are convinced the positive effect of laughter physical and mental health.
Prices of daily goods ________through a computer can be lower than store prices.
About 698,000 laptops were sold in China in second quarter, 12.1% in crease from a year ago.
A person’s_____ body temperature is about 37℃.
Do you think that people are _______off than they were five years ago as our standard of living is improving.