单项选择题

A．searched
B．examined
C．discovered
D．hidden
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单项选择题
A．checked inB．concludedC．observedD．decided
A．checked in
B．concluded
C．observed
D．decided
单项选择题
A．cheerfulB．joyfulC．horrifiedD．frightening
A．cheerful
B．joyful
C．horrified
D．frightening
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