单项选择题

He suffered from mental illness and had no clear ______ of right and wrong.

A．thought
B．idea
C．concept
D．opinion
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单项选择题
Many non-governmental colleges have been ______ in recent years which allow more students to have a chance to go to college.
A．established
B．constructed
C．erected
D．built
单项选择题
As it will soon be Christmas, I'm ______ to get the television repaired as quickly as possible.
A．impatient
B．concerned
C．worried
D．anxious
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