单项选择题

He had trouble (finding out) (that) the national park (lay) in the coastal area (or) in the mountains.

A．finding out
B．that
C．lay
D．or
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单项选择题
She ought (to) (stopping work); She (has a headache) because she has been reading (too) long.
A．to
B．stopping work
C．has a headache
D．too
单项选择题
They sat (together) (to make) (a room) (for) an old lady.
A．together
B．to make
C．a room
D．for
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