35. We shouldn’t spend our money testing so many people, most of ____ are healthy.

A. that　　　　 　　 B. which　　　　　　 C. what　　　　　　　　 D. whom

34. The tiger, once a ____ animal to humans, is now ____ of disappearing on the earth.

A．dangerous, danger　　　　　　　　 B．dangerous, in danger

C．in danger, in danger　　　　　　　 D．danger, in danger

33. Laszlo Biro is considered ____ the ball point pen.

A. to invent　　　　　　　　　　　　　　　　　　　 B. inventing　

C. to be inventing　　　　　　　　　　　　 D. to have invented

32. We’ll do what we can ____ his book published as soon as possible.

A. have　　　 　　 B. to have　　　　　 C. having　　　　　　 D. had

31. As more and more trees ____, tigers can ____ hide and hunt.

A. are cut down, not longer　　　　　　　 B. cut down, no longer

C. cut up, no more　　　　　　　　　　　　　　 D. are cut down, no longer

30. Julia ____ leave her store ____ a man entered the room to buy a book.

A. was about to, before　　　　　　　　　　 B. was about to, while

C. was about to, when　　　　　　　　　　　 D. was to, then

29. John may phone tonight. I don’t want to go out ____ he phones.

A. in case　　　 B. in that case　　 C. so that　　　　　　 D. in case of

28. When first ____ to the market, these products enjoyed great success.

A. introducing B. introduced　　　　　 C. introduce　　　　 D. being introduced