35．- How could you make such a silly mistake?

　　　 - I’m sorry．I ______ it before I handed in the paper．

　　　 A．should check　　　 　　　　　　　　　　　　　　　　 B．could check

　　　 C．must have checked 　　　　　　　　　　　　　　 D．ought to have checked

34．Jim couldn’t afford to buy the present for his wife, for five pounds was ______ he had on him．

　　　 A．all that　　　　　　　　 B．that　　　　　　　　　　 C．all what 　　　　　　 D．what that

33．What’s the use of keeping the secret ______ everyone has already known it?

　　　 A．as though　　　　　　 B．now that　　　　　　　 C．before long　　　　　 D．in case

32．Under no circumstances ______ allowed to enter the lab without permission．

　　　 A．you are　　　　　　　 B．you will be　　　　　 C．are you 　　　　　　　 D．have you

31．Realizing that her husband had deceived her, she demanded that she ______ the whole truth．

　　　 A．should tell　　　　　　 B．told　　　　　　　　　　 C．be told 　　　　　　　 D．was told