单选题
21.
No freshman and no graduate student______to sit in on the forum.
A、
are allowed
B、
is allowed
C、
are approved
D、
is approved
【正确答案】
B
【答案解析】
由两个no修饰的两个单数名词作主语时,谓语动词仍用第三人称单数。句子谓语要求用第三人称单数的还有以下结构:more than one…;one after another...;every…and every…;each…and each…;each and every...;many A...and many A...
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