Teenagers must be careful not to let their part-time jobs______ too much of their time because studyis still their primary responsibility.[ ]

Do you know Anna’s telephone number — ______. As a matter of fact, I don’t know anyAnna, either.

We should do what we can ________ crime,because it is ________ danger to society. [ ]

The notice came around two in the afternoon ________ the meeting would be postponed.[ ]

People in ancient times ______ series of important events so that we now have what is called history.[ ]