Most birds find it safe to sleep in the trees, but ____ they have eggs or young chicks, they don’t use a nest.
A small plane crashed into a hillside five miles east of the city, ____all four people on board.
______ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai..
She was leaning against a tree as if ______ for someone.
The weather turned out to be fine yesterday. I ___ the trouble to carry my umbrella with me.
The teacher stressed again that the students should not ________ any important details while retelling the story.