Your shoes under the bed _________. Put them in the sun, please.
| A．are smelt bad | B．smell bad |
| C．smell badly | D．are smelt badly |
The story book _________ for two weeks .
| A．has been borrowed | B．has borrowed |
| C．has been kept | D．has kept |
—Look，your father is playing the piano over there.
—He________ be my father. He has gone to Beijing.
| A．mustn’t | B．can’t | C．shouldn’t | D．may not |
Thank you for giving me __________.
| A．such good advice | B．such a good advice |
| C．so good advice | D．so a good advice |
Chinese is used ______ the largest number of people in the world.
| A．to | B．for | C．by | D．as |