单项选择题

Devotion means __ our heart on one thing at a time and give up all other thoughts.

A． setting
B．set
C．to set
D．that setting
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单项选择题
The playing cards we use today are much like those __ for hundreds of years.
A．were used
B．. used
C．been used
D．using
单项选择题
I hope to hear more about the activities __ there.
A．being happened
B．to be happened
C．going on
D． being gone on
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