The South China Tiger is ________,and we should  them.

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A. dangerous; save

B. in danger; prevent

C. in danger; save

D. dangerous; protect

Electricity proves ________ in our ________ life.

[　　]

A. useful; everyday

B. useful; every day

C. usefully; daily

D. usefully; everyday

Sarah hopes to become a friend of ________ shares her interests.

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In order to look after her sick daughter,the old lady asked for a month's ________.

[　　]

You'd better fly somewhere in the west. Then you can ________a hire car and travel around．

[　　]

The teacher _________ that the pupils finish their compositions at once.

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At the________ of the bell,the pupils rushed out of the classroom.

[　　]

--What is Meimei doing?

--She is doing her homework_______.

[　　]

I'm feeling tired out. I've been on the _______ ever since eight oclocks this morning.

[　　]

However,at times this balance in nature is _____,causing a number of possibly unforeseen effects.

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