30. ---It’s the office! So you ______ know eating is not allowed here.---Oh, sorry.(A). must (B). wi
31. Please do me a favor ---______ my friend Mr. Smith to Youth Theater at 7:30 tonight.(A). to invi
32. You and I could hardly work together, ______?(A). could you (B). couldn’t I (C). couldn’t we (D)
33. Either you or one of your students ______ to attend the meeting that is due tomorrow.(A). are (B
34. ______ the police thought he was the most likely one, since they had no exact proof about it, th