问题
选择题
— Dad, may I go out with my friends?
— Unless your homework .
A．has been finished
B．has finished
C．finishes
D．will finish
答案
答案：A
题目分析：句意： ---爸爸，我可以和朋友出去吗？---除非你的作业已经完成了。主语是“your homework”，应该是被完成，用被动语态，排除B、C和D。故选A。