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Yesterday I ________ my mother cook the dinner．

A．help

B．helps

C．helped

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－What's the matter?

－I'm ________．I lost my doll．

A．happy

B．sad

C．thirsty

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In China, we start school ________ 8 o'clock．

A．at

B．on

C．in

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Jack, please look ________ the blackboard．

A．on

B．at

C．in

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He is blind．He can't walk by himself．But the dog ________ help him．

A．can

B．could

C．can't

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－You can jump really high, Tom．

－________

A．That's OK．

B．Thank you．

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Yesterday, Sam played football with his friends ________ the park．

A．in

B．on

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I ________ play the flute．But I can play the piano．

A．can

B．can't

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－________ toy plane is it?

－It's Mingming's．

A．Who

B．Whose

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－Can you catch the ball?

－Very ________．

A．bad

B．badly