79．这些水果我该付多少钱？

　　　　 How much should I _______________________ the fruit?

78． Bill比Bob更擅长于游泳。

　　 Bill is ___________________________________ than Bob.

77.You must return the library book this afternoon.

　 You must __________　 ____________ the library book this afternoon.

B)按照下面各题的汉语意思用英语完成句子，把答案写在横线上，词数不限。

76. How delicious the bread is!

　 ______________　 _________________ bread!

75. Is there little time left?

　 There is little time left, ____________　 ________________?

　　 A)在下面各题B句的每个空格写上一个单词，使B句的意思与A句相 近。

74. I think Japanese is not so important as English.

　 I think Japanese is _____________　 ______________ than English.

73. ___________ (三月) is the best time for planting trees.

72. Is there a lot of ____________(冰) on the lake in winter?

71. It rained _____________(大) last night.

70. How long may I _____________(借) the science book?