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

30、After they were given several terrible blows, the enemy did not _____ out after dark.

A. dared to come  B. dared come    C. dare to come      D. dare coming

29、I seated myself in the front row so as to make myself ______ the speaker.

A. understand   B. understood      C. understanding    D. to understand

28、Where was ______ the traffic accident happened last night?

A. it          B. the place that    C. the place        D. it that

27、I haven’t the slight idea _______________.

A. where does he live              B. that he lives where

C. where he lives                D. that where he lives