They were surprised that a child worked out the problem _____ they themselves couldn’t.
.The detective, ______to read a newspaper, glanced at the man ______next to a woman.
It’s not right to ______ the poorer people of the world.
.Three-fourths of the buildings ______.
Mary is one of the girls who ______ always on time.
It was so cold that they kept the fire ______ all night.