Do you know the headmaster well—Not really, just a nodding ______.

1. — ___________ is itfrom Suzhou to Beijing— It used to be a long way, but nowadays,it takes only five hours to get there by high-speed rail.

Could you please open the door for me —Sorry, I ________, I have no key to the door.

Did you hear the shouts the little girl—Yes. When I arrived there, I found her looking at a snake in fear.

Though the manager is very busy, he still ____ an hour to read every day.[ ]