Laughter, along with an active sense of humor, ______ protect you against a heart attack, according to a recent study.
By the time you come back, your aunt ______ for Nanjing to attend a meeting.
______ frightened us ______ a tiger turned up suddenly in front of us.
The boys ______ the newspaper on the ground and began to read the news and articles in it.
Now that she is out of a job, Lucy ______ going back to school, but she hasn’t decided yet.
It is in their ability to speak ______ humans ______ from animals.