51. 我想逛街，不想看电视。

　　 I want to go shopping ______________________.

50. How many ________ (block) does she live away from here?

49. This new kind of calculator(计算器) needs two ________ (battery).

48. He is known by most of us, so he needs no ______ (introduce).

47. She is very ________ (create), and she writes and paints very well.

46. Bell ________ (invent) the telephone in 1876.

45. It is clearer and nicer to take photos with a d________ camera than an ordinary one.

B. 用所给词的适当形式填空。

44. Most students don’t write in i________. They like to use ballpoint pens.

43. News s________ much more slowly in the past.

42. Now c________ clothes are more popular. They are good for our health.