Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence.

45. You will find this map of great ________ in helping you to get around the city.

　　 A. source　　　　　　　　　 B. sense 　　　　　 C. favor 　　　　　 D. value

44. It was after the invention of printing ________ to publish large numbers of books and pictures.

　　 A. were people able

　　 B. that people were able

　　 C. when were people able

　　 D. people were able

43. Sugar, when ________ with water, dissolves quickly.

　　 A. mixed B. mixing C. mix D. is mixed

42. Telephone messages for the manager ________ on her desk but she didn't notice them.

　　 A. were left B. was left C. was leaving D. were leaving

41. I am sure that Laura's latest play, ________ staged, will prove a great success.

　　 A. since B. unless C. once D. until

40. The purpose of new technology is to make life easier, ________ it more difficult.

　　 A. not making　　　　　　 B. not make 　　　　　　　　 C. not to make D. nor to make

39. When the first English settlers arrived in the New World, the Indians ________ jewellery made of animal bones greeted them warmly.

　　 A. wearing　　　　　　　　　 B. to wear　　　　　　　　　　 C. worn　　　　　　　　　　　　 D. having worn

38. Don't leave the sharp knife ________ our little Jane can get it.

　　 A. in which　　　　　　　　 B. to which　　　　　　　　　　 C. that　　　　　　　 D. where

37. Our club is open to adults only.　　　 your children have entered without permission.

　　 A. There seems that

　　 B. It seems to be

　　 C. There seems to be

　　 D. It seems that

36. This company was the first ________ portable radio as well as cassette tape recorders in the world.

　　 A. producing

　　 B. to produce

　　 C. having produced

　　 D. produced