Our teachers think Jim the best student. The sentence structure is _______

Jackie Chan has donateddollars to charity.—He is an example to us all.

Could I have an interview with Mr Green now, please?— Sorry, he _________ a meeting. You’d better wait a minute.

Do you want______ bread?—Yes, I usually eat a lot when I’m hungry.

Zhang Hua is clever and works hard at his lessons. __________ .