单项选择题

A bit later I ______ a group of hikers out for a walk.

A．came on
B．came upon
C．came back
D．came up with
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单项选择题
She was very ______ about my suggestion.
A．tentative
B．noncommittal
C．hesitant
D．abridged
单项选择题
I have great ______ for people in affliction.
A．haughty
B．arrogant
C．empathy
D．sympathy
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