—Lucy has been fired by her boss.— She is late for work five times a week!
Look! That fellow is too sleepy to work. He ______ up reading until midnight.
According to Lee, it was Ben’s carelessness that _______ the accident. But Ben _______ his wrong doing.
I believe that those mountains ________ with trees in a few years’ time.
______ the scene, he couldn’t help thinking of the description in a book ____ by a British novelist.
________ many changes have _______, we should keep pace with the changes too.