66.Andy ________ (get) much working experience since he left college　 .

65. It rained so ___________(heavy) last night that many streets were in water.

C. 根据句意，用所给动词的适当形式填空。

64. We can never expect a bluer sky if we don’t create a _______ polluted world (little).

63. How______ (interest) the book you bought for me yesterday is!

62. My daughter is old enough to look after ________ (she). She can stay at home alone.

61. All the Chinese are worrying about the __________ (appearance) of MH 370.

60、The Four Great _______(发明) changed the world and made China famous in ancient time.

B. 根据句意用所给单词的适当形式填空。每空一词。

59、—Joe, do you know what PM2.5 means?

—Not exactly. I think Professor Zhang will _________(解释) it to us.

58、Would you please ____________ (答复) to my e-mail as soon as you receive it?

57、Our family will soon celebrate my father's _________（四十九岁）birthday.