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(dòng)詞demand，require，suggest，insist，advise，order等后接賓語(yǔ)從句時(shí)，從句中謂語(yǔ)動(dòng)詞應(yīng)使用虛擬語(yǔ)氣，即“should+動(dòng)詞原形(do/be done)”，should可省略。