–Mom may I play the computer games for a while? ! Dad is in the studyA. Help yourself

问题补充：

–Mom, may I play the computer games for a while?

-- ! Dad is in the study．

A. Help yourself．

B. It’s up to you．

C. Behave yourself．

D. Go ahead．

答案：

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。