30. The musician died early, _____ a lot of musical pieces unfinished.

　 A. to leave　　　 　 B. leaving　　　 　 C. and leaving　　　 　 D. left

29. It was last week that I called at _____.

　 A. my aunt　　　 　 B. my aunts'　　　 　　　 C. my aunt's　　　 　　 D. my aunts

28. Green vegetables _____ nutrients, _____ vitamin A and C.

　 A. include, contain B. include, containing 　 C. contain, include　　 D. contain, including

27. Antonie Becquerel was one of the Nobel Prize winners who _____ given the special honor for outstanding achievement in physics in 1903.

　　 A. were　　　 　　 B. had been　　 C. have been　　　 　　 D. was

26. During the Olympics, the Special TV Program will _____ all the track and field events in progress.

　 A. be informed us of　　　　　　　　　　 B. keep informing us of

C. keep us inform of　　　　　　　　　　 D. keep informed us of

25. Don't interrupt the teachers. They seem ______ something important.

　 A. to discuss　　　 B. to be discussing　 　 C. discussed　　　 　　　 D. discussing