题目内容
.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 |
D
解析试题分析：本句考察的是only的倒装句。当only放在句首，且强调状语的时候，后面的主句要使用部分倒装句。本句中only放在句首，强调的是时间状语从句when your identity has been checked。所以后面的主句使用部分倒装的形式。根据句义我们知道使用被动语态的形式。句义：只有当你的身份被确认的时候，你才被允许进入。故D正确。
考点：考察倒装句和语态
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