With no rain for three months, and the food supplies running out, the present           ­­__here is getting worse.

 Most air pollution is caused by the burning of _________ like coal, gas and oil. 

Many people，especially children，are encouraged by Jackie Chan to learn kungfu to develop their good________.

It’s generally considered that being named as Time’s Person of the Year is a(n)          of one’s success.

“Why couldn’t they meet us at five o’clock?” “Because they were delayed by _________.”