In order to gain a bigger share in the international market, many state-run companies are striving _______ their products more competitive.
| A．to make | B．making | C．to have made | D．having made |
Is there ____ in today’s newspaper?
| A．something special | B．anything special | C．special anything | D．special something |
He’s already left here. You ____ have come here half an hour earlier.
| A．ought | B．must | C．should to | D．ought to |
Could you give me ____ on how to learn English?
| A．some advice | B．an advice | C．any advice | D．some advices |
—Why didn't you remind him of the possible danger?
—But what ____ otherwise? He never listens to me．
| A．could I do | B．could I have done | C．should I do | D．must I have done |
—Your colleague's spoken English is beautiful, Lily．
—It's no wonder．She ____ in the USA for a year as a visiting professor．
| A．worked | B．has worked | C．had worked | D．has been working |