Whales are living ___________. A. in sea B. in the sea C. on the land
—I’m worried about tomorrow’s math exam. — ______ . I’m sure you will make it.
Mrs. White _______dinner when her son came home.
-What are you doing ? -I am _____my dictionary. I want to ____the answer.
People often compare a teacher _____ a candle.
He was ____tired _____he fell asleep as soon as he lay down.