The most important thing of a true friendship is __________.

She showed her _________ by asking lots of trivial questions.

Children are always _________ about Tet holiday.

Each nation has many people who voluntarily take care _________ others.

A person who has been chosen to speak or vote for someone else on behalf of a group is a(n)____________

A person or thing that is loved and admired very much is the ______________

_________ is work that involves studying something and trying to discover facts about it.

A number of safe and inexpensive birth-control _______ are provided to reduce the overpopulation in many countries.

Not _____________well, she decided to go home to take a rest.

_____________ from the horseback, he was taken to hospital and had an operation.