--Be careful! It's so ________!

--Thank you. I will.

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--What are you doing?

--I'm putting the picture ________ the wall.

[　　]

--Put on your coat, Mary. It will keep you ________.

--OK. Thank you.

[　　]

--Where's Danny?

--He had ________ accident last week and is in hospital.

[　　]

--Where is Doctor Wang?

--He is operating ________ a injured man.

[　　]

My brother loves playing ________ violin in his spare time.

[　　]

They devoted ________ to the research of the new type of machine.

[　　]

Mr. Li is one of the best ________ in our school.

[　　]

I like bananas ________ Tom likes apples.

[　　]

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