Students should ______ to choose their own uniforms.A．allowB．allowedC．are allow
题型：不详难度：来源：
Students should ______ to choose their own uniforms.| A．allow | B．allowed | C．are allowed | D．be allowed |
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答案
| D |
解析
试题分析：句意：应该允许学生们自己选择他们的制服。本句中should是情态动词，后面动词用原形，学生们是允许的对象，故用被动语态。选D。
点评：此类题型主要是确定句子主语与谓语动词的关系。如果是主动关系则用主动语态，反之如果是动宾关系，则用被动语态。 |
举一反三
—Computer is so useful. It can do almost everything.
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