---Thanks for your help, but can you do me one more favor, please？
--- _______, sir．What's it then?
| A．Just a minute | B．It's very nice of you | C．That's all right | D．At your service |
His interests extended _____ the fine arts to international politics and philosophy.
| A．across | B．through | C．over | D．beyond |
—Mr. Smith _____ in Russia for 10 years.
—No wonder he can speak Russian fluently and now teaches Russian in a Chinese college.
| A．had stayed | B．has stayed | C．stayed | D．stays |
_____ Chinese basketball player Yao Ming will probably return to the NBA if he can recover from _____ earlier injury.
| A．不填; an | B．The; 不填 | C．A; an | D．The; the |
This has been my life. I have found it worth living, and ____ it gladly again if I _____ the chance.
| A．would live; had | B．had lived; have had | C．have lived; had | D．would live; had had |
If the weather had been better, we could have had a picnic. But it ____ all day.
| A．rained | B．rains | C．has rained | D．is raining |