单项选择题

I couldn't help ____________ sorry for her. Her mother died when she was three.

A．feel
B．to feel
C．felt
D．feeling
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单项选择题
It is often easier to make a promise than to___________.
A．keep it out
B．give it out
C．break it out
D．carry it out
单项选择题
To keep ____________ ,we must do more outdoor exercises.
A．well
B．fine
C．fit
D．health
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