Just imagine performing such an opera as Turandot in the Forbidden City---there _____ be a better setting! 

—Mum, I'm tired.—Well, if you ________ go to bed after midnight every night, what do you expect?

“No student,” the headteacher stressed, “_______ go out of the school after ten o’clock at night without my permission.”

(2013·北京东城二次联考)—________ you interrupt now？Can't you see I'm on the phone?—Sorry，sir，but it's urgent.

— I’m a little tired. Let’s go to the zoo by taxi.  —We ________take a taxi. It’s not far from here.