28. As well as _____ two glod medals , Yang yang helped China make a break-through in Winter Olympics.
A. winning B. win C. won D. to win
27. _____ rapidly by the body , sugar provids a quick energy source.
A. Digested B. Digesting C. To digest D. Having digested
26. Mary is said ______ abroad , but I don’t know which country she studies in.
A. to be studing B. to study C. to have studied D. to have been studying
25. A cook will be immediately fired if he is found _____ in the kitchen.
A. smoke B. smoking C. to smoke D. smoked
24. Which do you enjoy _____ your holiday, going abroad or staying at home?
A. spending B. to spend C. being spent D. spend
23. The famous writer’s play , _____ in one of my books , was published in 1963.
A. to mention B. mentioned C. to be mentioned D. mentioning
22. Who did the head ______ the wire?
A. have fix B. has fixed C. have fixed D. has fix
21. -Do you have anything more _____ , sir?
-Not at the moment . Have a rest then.
A. typing B. to be typing C. typed D. to be typed
20. The policeman came up to the lonely house , whose door was open , _____ there for a while , and then entered it.
A. to stand B. stand C. stood D. standing
19. Silver is the best conductor on electricity, copper ______ it closely.
A. followed B. to follow C. following D. being followed