WetalkloudlywhenweseethesignBe

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We _______ talk loudly when we see the sign “ Be quiet ”on the right.

A．must

B．mustn’t

C．need

D．needn’t

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Knowing how to _______ a map can help you when you are travelling in a strange place.

A．read

B．watch

C．look

D．see

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Now the air in our city is _______ than it used to be. Something must be done to stop it.

A．very good	B．much better
C．rather bad	D．even worse

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—The books are so nice, which one can I take?
—Oh, you can take _______ of them. I’ll keep none.

A．both	B．all
C．neither	D．either

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I wanted to explain, but he didn’t give me any _______.

A．chance

B．excuse

C．way

D．choice

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—Who is playing the piano in the classroom?
—_______ must be Susan. She plays the piano after school every day.

A．She

B．It

C．This

D．He

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