单项选择题

She ought to stop work; she has a headache because she（）too long.

A．has been reading
B．is reading
C．had read
D．read

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单项选择题
When we are introduced to the ancient building, many of us believe that the walls of the building needed（）

A．to repair
B．to have repaired
C．being repaired
D．repairing
单项选择题
My boss asked me to answer the phone, to take all messages, and（）some letters.

A．to type
B．typing
C．type
D．typewrite
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