单项选择题

Computers are the second most useful （） of the world.

A．inventions
B．inventors
C．invention
D．inventor

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单项选择题

Kate says that she （） a message on the desk.

A．will leave
B．leave
C．will give
D．give

单项选择题

He has two kites, one is big, （） is small.

A．the other
B．another
C．other
D．others

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