The number of people who speak English ______ large, and a large number of people _______ native speakers.
| A．are ; are | B．is ; are | C．is ;is | D．are ;is |
You _____ pay too much attention to your reading skill, as it is so important.
| A．cannot | B．should | C．must | D．needn’t |
I _____ have written to him because he phoned me shortly afterwards.
| A．ought to | B．must | C．couldn’t | D．needn’t |
Sir, you ______ be sitting in this waiting room. It is for women and children only.
| A．oughtn’t to | B．can’t | C．won’t | D．needn’t |
He hurt his leg climbing the mountain; otherwise, he _____ the meeting.
| A．will attend | B．had attended | C．would have attended | D．would attend |
— Turn off the TV, Jack. ____ your homework now?— Mum, just ten more minutes, please.
| A．Should you be doing | B．Shouldn’t you be doing |
C．Couldn’t you be doing | D．Will you be doing |