(2013·安徽卷)From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
She is the only one of the students who ____ praised by the teacher.
They talked for about an hour of things and persons _____ they remembered in the school.
It was not ______she took off the glasses ________ I realized she was a famous film star.
______ the day went on, the weather got worse.
He went home for lunch____ the clock struck twelve.