–Mom, may I play the puter games for a while?
-- ! Dad is in the study．
A. Help yourself．
B. It’s up to you．
C. Behave yourself．
D. Go ahead．
网友回答
A. Help yourself．
B. It’s up to you．
(答案→)C. Behave yourself．
D. Go ahead．
解析：本题的含义是由于爸爸现在在学习，那么你玩电脑游戏就要检点一点，behave yourself表示此意，故本题选C。