You ______ worry about their safety.They are old enough to take care of themselves.
The information on the Internet gets around much more rapidly than_______in the newspaper.
Throughout _______history, man has had to accept ____fact that all living things must die.
–I’d like to be on my own for a while. Do you mind?--________. Go ahead.
The police were seeking more information to find out______ the rich merchant.
Several weeks had gone by______ I realized the painting was missing.