问题补充：
If your homework , you may watch TV for half an hour.
A. is finished
B. will be finished
C. has finished
D. will finish
答案：
(答案→)A. is finished
B. will be finished
C. has finished
D. will finish
解析：if后引导的条件句遇到将来用一般现在时代替，本题的条件句为被动句，结构为be+动词过去分词，意思为家庭作业被完成，故本题选A。
