The teacher asked an easy question, but not a proper answer _____.
—How's your project going,Jack?—________.I'm half finished with it.
________ an hour every day has made a considerable difference to my health.
Not only ________ polluted but also ________ crowded.
Close the door of fear behind you,and you ________ the door of faith open before you.
________ made our school proud was ________ more than 60% of the students were admitted to key universities in 2013.