It is usually not quite cold in this area in March, but sometimes temperature __________be very low.

He hesitated for a moment before kicking the ball, otherwise he ______ a goal. 

Doctors say that exercise is important for health,but it__________be  regular  exercise .

— Why do we get up so early?— If we ______ the flight we would have to stay here for another day. 

I would have met him ______ to the cinema last night.