Just as sound travels through the air in waves, electricity travels through the air in ______ radio waves.
| A．what is called | B．which is called | C．what it is called | D．which it is called |
—Does he work hard at his lessons? —Yes, he __ no efforts, I dare say.
| A．spends | B．shares | C．spares | D．wastes |
—You ____ have a new dress for your birthday, Mary. —Thank you, mum.
| A．shall | B．will | C．ought to | D．need |
My cousin, little Tom, is __________ a fool. He did very well in all his subjects.
| A．something as | B．something but | C．anything but | D．nothing but |
By the time he arrives in Tianjing, we ____ here for two days.
| A．have stayed | B．have been staying | C．stay | D．will have stayed |
Without proper lessons, you could ___ a lot of bad habits when playing the piano.
| A．keep up | B．pick up | C．draw up | D．catch up |