One of the most important questions they had to consider was ______ of public health.

Leo was so __________that he rushed to the kitchen ,hoping to find something to eat.

Don’t play a trick _________ him.[ ]

A nice tie! A present?–Yes, it is. My aunt ______it to me for my last birthday.

Do you think twenty people are enough for the work?—No. I am afraid we need at least______ students.