【题目】How many hours do you sleep every night?

【题目】How often do you exercise?

【题目】What’s your favorite food?

【题目】Beijing Opera, an important part of Chinese culture, ________(have) a history of over 200 years.

【题目】So far, no ________(science)studies have shown that shark fins are good for health.

【题目】People were ________(complete)shocked when they heard about Kobe's accident.

【题目】Nowadays, shared ________(car) are becoming more and more popular.

【题目】China is the ________(three)nation that sent a person into space.

【题目】Since 1990, Project Hope ________ millions of students from poor families realize their dreams.

【题目】The BBC's documentary Du Fu：China's Greatest Poet explains ________ Du's works have been popular for centuries.