14. He has dropped several strong _______ to his boss that he will go and work for someone else. (3---5A#)
A) faints
C) clue 线索 D) indication指示指出
15. The cabbages have already started to _______ and we have to throw them away. (3---5A*)
A) slide B) drip
D) faint昏倒
16. Cloudy skies阴天 are rare in the desert where there is hardly any ______. (3---5A#)
水分，湿度 B) straw
C) drip D) blank
17. The patient’s skin hung loosely so a needle针 was secured to
A) flood C) flow D) liquor
19. You can write one-to-two page paper _______ your reasons for choosing civil engineering土木工程 as your major. (3---5A#)
A) exaggerating C) assuring D) swearing