— ________, where is my pencil? — ________, I don’t know.
Our English teacher said _____ English well was very important. A.learn B.learning C.learned
—Don’t throw stones at the animals in the zoo.—_____. A.No, I won’t. B.Yes, I will. C.Yes, I do.
The doctor warned my father _____. A.to smoke B.not smoking C.not to smoke
—My aunt goes to climb mountains every Sunday. —Oh? But she _____ hate exercising. A.used to B.was used to C.is used to
—Boys and girls, believe in yourselves._____ you are, the better grades you’ll get. A.The more careful B.The more carefully C.The most carefully