--- How did you like the concert last night?
--- I enjoyed it very much, but the dancers ______ a better job.

He knows it is high time that he ________ at once.

It is very important that you _______ for this examination.

—Where on earth have they gone?
—I have no idea, but I wish I          .

He has no idea what the book is about．He        have read it very carefully．

If you ______ succeed, you will have to work hard.

Students  ______ remain in their seats until all the exam papers have been collected.

—He failed in the exam again.
—He __________his teacher’s advice.   

Were it not for the fact that his father is on the board of directors, he ______ the job.

He said that he would write to us but so far we ___________ from him.