Mr. Wu is good ____ math. He teaches _____ math well.

The policeman asked the child ________ cross the street ________ the traffic lights turned green.

—I’m very    _ with my own cooking.It looks nice and smells delicious.－Mm, it does have a        smell.

— How much should I pay for the food, Sir?— It costs ______. The food is free on our ship. ______ needs to pay for it.

You don’t have to _______ every new word in the dictionary while reading.