I' m _________Class Three, Grase Four. ( )

A．on

B．in

C．at

句子改错
1. You look beautiful with your shoes.
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2. Boys only can wear shorts and trousers.
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3. Boys can’t wear skirts and dresses.
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4. Can you buy a pair of sock for me?
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5. Let’s go to shopping.
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选出不同类的一项：(   )

A．kite

B．flag

C．inside

D．family

Let’s write the name ________ the address. (  )

A．and

B．at

C．but

翻译下列句子
1. What’s six plus twenty?
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2.50+20=?
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3. Do you know the missing number?
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4. The missing number is twenty.
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