You _____ lose your way if you walk alone in the mountains at night.

Johnny’s uncle promises that the boy        get a nice present on Christmas Eve.

 ---Why hasn’t Jane arrived yet?  ---She ______ again in the morning.

—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?     —_______ my students have a try?

— It’s hard to believe that Jack ________ have fought with the policeman.— Yes. If one ________ ask for trouble, it can’t be helped.