You should try _______down and take a rest.
—I lost my MP4 player on my way to school this morning.—______ You must be careful next time.
I find ______ fun to fly kites in the field, especially on a windy day.
A ______ boy named Dong Kai lost his right leg in a car accident.
— Have you ever been to Shanghai ______?— Yes. I went there two weeks ______. It is a modern city.
Mary spends two hours ______ her homework every day.