He is so addicted to smoking that ______ seems to be no chance of talking him into quitting

nally, the job as a teacher _____ be challenging, for I sometimes _____ deal with some smarter but less diligent students.

Mrs Brown was much disappointed to see the washing machine she had _____ went wrong again

May I speak to the headmaster—-He ______ a meeting now. Can I take a message

依次填入下列各句横线处的词语，最恰当的一项是①他们家今年收成不好，年终时核算，________不多。②一种________的恐惧蔓延到全身，使他无法再在会场里静静地坐着了。③同学们上学时一旦发现校门口有________可疑的人徘徊或逗留，应及时报告保安或值班老师。