单项选择题
A．great deal has been done to
remedy
the situation.
A．maintain
B．improve
C．preserve
D．protect
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单项选择题
John is collaborating with Mary in writing an article.
A．cooperating
B．marrying
C．combining
D．arguing
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单项选择题
The curious looks from the strangers around her made her feel uneasy.
A．different
B．proud
C．uncomfortable
D．unconscious
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