根据对话内容，在每小题的空白处写出一个完整的句子，使对话意思完整。

Man：This is the world of computer. (51) ?

Li Lei： Yes, I”d like to buy a PC(personal computer),but I don”t know much about

computers.

Man： (52) ? It”s the newest product of Legend.

Li Lei：Do you have any imported computers?

Man：This is the best one in our shop.

Li Lei： (53) ?

Man：It”s Apple.

Li Lei：(Look at the price tag) (54) .

Man：It”s the newest type. And that”s the price for the whole set.

Li Lei： Well. (55) . Thank you.

Man：It”s my pleasure. If you need some help. I”ll just be around.

50. 夏威夷因美丽的海滩而闻名。

Hawaii is its beautiful beaches.

49. 当你看到红灯时应该减速。

When you see the red lights, you should .

48. 我父亲以前是个司机，而现在他是医生。

My father be a driver, but now he is a doctor.

47. 张老师准是在办公室里。

Mr. Zhang in the office.

46. 教室里有些学生在说话。

There are some students the classroom.

45. In the second half, the boys became (relax)and lazy, but the girls carried on working

hard.

(B)根据汉语意思完成下列句子，每空只填一词。

44. (cut)down the tree for Christmas at the farm is a lot of fun.

43. In a few minutes, he was fast (sleep).

42. It”s our young teacher”s (thirty)birthday.