首页 > 中学英语试题 > 题目详情
---Could I skate here, Mr. Green? ---I’m afraid you _______, ________ you have the headmaster’s perm...
题目内容：
---Could I skate here, Mr. Green?
---I’m afraid you _______, ________ you have the headmaster’s permission(允许).
A.can’t; unless B.couldn’t; unless C.can’t; if D.couldn’t; if
本题链接：