Excuse me. Which is the way ______ the post office, please? —Sorry, I don’t know. You can ask the policeman _______ help. [ ]

people come to visit the Great Wall every year.

Tom needs some help _____his homework. Can you help _____? [ ]

How many teachers are there in your school? —I’m not sure about it. Maybe.

People in our city have raised ____________yuan for the people in the poor area.