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21. Only when your identity has been checked ______.
A. you will be allowed in B. will you be allowed in
C. you are allowed in D. will you allowed in
¢ò Choose the best answer£¨15·Ö£©£º
21. Only when your identity has been checked ______.
A. you will be allowed in B. will you be allowed in
C. you are allowed in D. will you allowed in