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

Many of us have a strange sense that we do remember feeling as if we _________in a dream, but can’t quite recall the details.

It is strange that the well-behaved gentleman _______ be so rude.

It has been announced that candidates ______ remain in their seats until all the papers have been collected.  

When it comes to consumer society, protest groups are insisting that some of our money ______ to the third world.