Doctors Without Boarders, ________ international organization, received ________ Nobel Prize for Peace in 1999 for its outstanding work .
After days of fantastic space trip, the three astronauts walked out of the spaceship, _______.
It takes _______ money to help those in need; it also takes love.
Often he______ sit for hours doing nothing at all when he was in low spirits.
What he had said and done in the school ______ his parents and teachers.
—What are you anxious about? —_______.