Question

Only when your identity has been checked ____________

1. A.
   you are allowed in
2. B.
   you’ll be allowed in
3. C.
   will you allow in
4. D.
   will you be allowed in

Answer 1

D
考察only引导的倒装句。Only放在句首且强调状语时，后面的主句使用部分倒装的形式。句意：只有当你的身份被核对，你才能被允许进入。