Students are warned ________ in the exam, otherwise they will be severely punished.

Finally he _____ that he was not interested in our offer.

However difficult you find         to arrange your time, it will pay off in the long run.

－Who is the lady standing over there?－I am not sure, but it may be ___ from the provincial government. 

-We have worked day and night for a whole month.--Why don’t you bring ______ to the attention that a good rest is badly needed?