---How long has the United Nations ________? --- ______1945.
According to a UN report,one third of the world population have no _________ to clean drinking water and health care.
Liza _ ___ well not want to go on the trip---she hates traveling.
Mr. Zhang is the best music teacher in our school, but he has hurt his left foot and cannot ________tomorrow's concert.
Magaret was so ________ to hear any news of her lost son that she was almost driven mad.
You’d better book the tickets in advance;________ we may miss the chance to enjoy the concert performed by the pop star.A.however B.otherwise C therefore D.nevertheless