Finding information in today’s world is easy, but the ______ you are likely to face is how you can tell whether the information you get is useful or not.
We don’t know if she _____ home. If she ____, I’ll tell you.
It’s required that the students___ mobile phones in their school, so seldom ____ them using one.
The old lady was ________at the thought of the ________experience in the forest.
Thousands of athletes _______ in many countries will compete ________ medals in the 2008 Olympic Games in Beijing.
Next door to ours _________, who has just returned form abroad.