eone has toanaction or policy, they are responsible for it, and may be required toexplain it to other people or be punished if it fails．

_______ do you have a sports meet at your school—Once a year.

The campers ________their tent in a sheltered valley. [ ]

ately, what the witness reported tothe police on the phone led to ___________.

Internet is very useful. It can__________our eyes to the outside.