Pudong International Airport is one of_______ airports in the world.

____________of the twins passed the exam because they worked hard at their lessons.

Is there _______ chicken in the hamburgers?— No, there isn’t _______.

I’m afraid I can’t ________ you, sir. Can you speak more slowly? —Of course.

.I was about to get on the bus __________my wife phoned me to back home at once.