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The plane will arrive in Haikou in half ______ hour.
A. a                        B. an                 C. the

Learning        country’s language is a better way of knowing ________ culture behind it.

I have （有）_____ ruler and ____ eraser.

Many people are still in_______ habit of writing silly things in_______ public places.

David comes from______ America and he is ______honest boy.

There is_______ old basketball under_______ bed. I like to play_______ basketball.

Shanghai Disneyland will cover _______________ area of 1.5 square kilometres.

—Can you go to the movie with me this afternoon?
—Sorry. I’ve __________appointment with my dentist. I’m going to see him.

My cousin Andy can play _______ piano very well, buy he isn't good at playing ______ basketball.

---This is         useful machine which was made in ________thirteenth century