Only when your identity has been checked .
A. you are allowed in
B. you’ll be allowed in
C. will you allow in
D. will you be allowed in
网友回答
A. you are allowed in
B. you’ll be allowed in
C. will you allow in
(答案→)D. will you be allowed in
解析：本题考查倒装和语态。句意：只有当你的身份得到核实后，才可以进去。放于句首的only修饰when引导的时间状语从句时， 主句应进行部分倒装(从句中不进行倒装)。