单项选择题

What does the man say about collaborative computing()

A.It is more useful than mobile phones.
B. It has massive potential for working environments.
C. It is capable of storing huge amounts of data.

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单项选择题

What’s said about gardening in Britain()

A. More than half of the British people are engaged in gardening.
B. Government approves people to use public places for gardening.
C. Private gardening in public places often takes place late at night.

单项选择题

（）about the bandits, she left her valuables at home.

A.Having warned
B.Warning
C.Having been warned
D.To warn

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What does the man say about collaborative computing()