单项选择题

A．Serious.
B．Uncommon.
C．Usual.
D．Light.
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填空题
His friend had just had a baby boy, who was______ them______ at night.
单项选择题
A．Simple tools are necessary for mankind.B．Simple tools can be very complicated.C．Simple tools are forgotten in the modern society.D．Modern technology are needed in the modern society.
A．Simple tools are necessary for mankind.
B．Simple tools can be very complicated.
C．Simple tools are forgotten in the modern society.
D．Modern technology are needed in the modern society.
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