35、They ______ be at home. You see, the door is locked from the outside.

A. can’t       B. may          C.  must           D.  mustn’t

34、The farmer who admitted ______ the tiger was severely punished.

A. to kill      B. killing        C. killed            D. to have killed

33、So often ______ in recent years that it has almost become a rule.

A. has this happened              B. this has happened

C. is this happening               D. for this to happen

32、A reward of 1,000 dollars will be given ________ can find the  lost child.

A. whomever    B. whoever that      C. to whomever    D. to whoever

31、I thought it a pity __________ him to the tea party.

A. being not invited               B. not to have invited

C. to not have invited              D. not to have been invited

29、Anyway, I slowly_________ the shock and tried to persuade myself that life begins at my age.

A. got over        B. put up            C. came over        D. dealt with

28、With a lot of mathematical problems __________, Marry went to bed.

A. solve              B. solved            C. solving       D. to solve

27、Never before__________ such a smoke in the room.

A. have I read      B. did I read         C. do I read   D. am I reading