Question

The teacher required that no one ________ late for class．

1. A.
   be
2. B.
   must be
3. C.
   should have been
4. D.
   was

Answer 1

A
動詞demand，require，suggest，insist，advise，order等后接賓語從句時，從句中謂語動詞應使用虛擬語氣，即“should+動詞原形(do/be done)”，should可省略。