问题补充：
Only when your identity has been checked , .
A. you are allowed in
B. you will be allowed in
C. will you allow in
D. will you be allowed in
答案：
A. you are allowed in
B. you will be allowed in
C. will you allow in
D. will you be allowed in
解析：
句意：只有你的身份被核实后，你才会被允许进入。考查Only+when从句放在句首时，用部分倒装。
