—Who’s singing in the garden?—It _____be Mr. Brown. He always practices singing at this time.A. must B. can’t C. need
Your shoes under the bed _________. Put them in the sun, please.
The story book _________ for two weeks .
—Look,your father is playing the piano over there. —He________ be my father. He has gone to Beijing.
Thank you for giving me __________.
Chinese is used ______ the largest number of people in the world.