I _____ you somewhere before , but your name has escaped me _____ moment . 

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

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.

There _____ be any difficulty about passing the road test since you have practiced a lot in the driving school.  

— Shall I go and buy two more bottles of beer?— No, I’ve already bought twenty. That _____ be enough for us two.