-I will allow you to use my computer if you can finish your homework before 4 oclock tod

问题补充：

-I will allow you to use my computer if you can finish your homework before 4 oclock today.

-Is that a? Im sure I can make it.

A. chance

B. promise

C. trick

D. treat

答案：

A. chance

(答案→)B. promise

C. trick

D. treat

解析：句意:-如果你能在今天4点之前完成作业，我将允许你用我的电脑。-那是一个承诺吗？我肯定能做到。chance 机会；promise 承诺，诺言；trick 恶作剧，把戏；treat 对待，治疗。根据句意可知，允许他玩电脑是一个承诺，故选B。