My book, The House of Hales, is missing. Who ________ have taken it?

----The task is challenging and demanding. Who do you think can make it?---- ___________my partner have a try? I think she is the right person to do it.

It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.

You have already tried your best, so you _____worry too much about the exams.

--- I haven’t got the reference book yet, but I will have a test on the subject next month.--- Don’t worry. You ________ have it by Thursday.