Giving children pocket money as a gift during the Spring Festival is a common ____ in     China.

—Believe it or not, last month in America I came across the girl whose photo was in the drift bottle got three years ago .   —Really？That’s the most surprising          I’ve ever heard of！

There is no _____ that taking regular physical exercise is good for your heart.

—Why don’t you go to medical college and be a doctor?— Oh. It calls for a great deal of _____with long training, which I am afraid I don’t have. 

They decided to leave the waiter a big _____ because the food and service had been excellent.