问题补充:
----- Can I go back home now? ----- You to leave until you your work.
A. won’t allow; finish
B. won’t be allowed; will finish
C. won’t be allowed; have finished
D. won’t allow; will finish
答案:
A. won’t allow; finish
B. won’t be allowed; will finish
(答案→)C. won’t be allowed; have finished
D. won’t allow; will finish
解析:考查时态,句意:我现在可以回家了吗?——直到你完成你的作业才能让你回家。可知主句描述的是将来的动作,故用将来时态,从句描述的是某个时间点前完成的动作,故用完成时态。固定句式not ……until 直到……才,故选C。