—When are the traffic police strong?    _---When they ___ up cars with one hand.

Some forms of algae have             to growing on ice.

If a person has not had enough sleep, his actions will give him_____during the day.

I would prefer _______ a low-income job that I am interested in rather than _________ my interest. 

Emergency line operators must always___calm and make sure that they get all the information they need to send help.