单项选择题

Many teakettles whistle when the （）starts to boil.

A. containing water inside
B. water contained inside
C. water containing inside
D. contain water

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单项选择题
不同的一项是（）

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C.naked
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单项选择题
The old couple would （） love to know how things are going on with their grandbaby.

A. deeply
B. at a great cost
C. dearly
D. as much as
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