I'm afraid I have to go now, for my parents_______ outside.
Teenagers should learn to protect ______ from all kinds of danger.
With the help of the Internet, information can ______ every comer of the world quickly.
It can’t be Lucy’s bike. Look! ______ is under the tree.
The banana pie tastes delicious. Could I have another______?
On March 11, 2011 _____ earthquake hit Japan.