People knew the nature of wolf very well.
A. [A] Right.
B. [B] Wrong.
C. [C] Doesn't say.
The house isn't comfortable tonight ______our air conditioner is not working.
A. [A] so
B. [B] because
C. [C] once
The young man refused ______the old man's advice.
A. [A] to listen
B. [B] to listen to
C. [C] listen to
We can find more and more grey wolf in Alaska.
A. [A] Right.
B. [B] Wrong.
C. [C] Doesn't say.
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