71． 以防萬一

72．試以"Can Money Buy Happiness？"（金錢能買來幸福嗎？）為題寫一篇議論文，必須包括以下內(nèi)容：
（1）有人認為金錢是幸福之本（source of happiness）；
（2）也有人認為金錢是萬惡之源（root of all evil）；
注意：
（1）詞數(shù)80左右；
（2）可以適當增加細節(jié)，以使行文連貫。

73．______ the project in time，the staff were working at weekends．（　?。?/div>

74．Solid can be turned into liquid and liquid into gas if heated enough.

75．Rewrite the sentences by changing the relative clauses into the -ing form or -ed phrases.
The tradition，which is deeply rooted in China，has been an integral part of Chinese culture for a very long time.

76．Rewrite the sentences by changing the relative clauses into the -ing form or -ed phrases.
Every year，hundreds of thousands of people who come from all over the world take part in Quebec Winter Carnival.

77．Jack and Harry stared at the bomb for a long time."It's bigger than the one that fell on Crown Street，" said Harry. "（1）Twice as big!" said Jack.The boys were lying on top of an old warehouse，and by peering over the edge，they could see the bomb clearly.
   "Wow!" said Harry. "（2）Wish we could get closer and have a good look.Would you like to touch it，Jack？"
   "（3）No，I don't!" cried Jack. "You must be crazy!Hey look!There's Old Tin Hat.Watch out.He'll see us."
   Old Tin Hat，the air raid warden（空襲民防隊長），was on duty.He always chased the boys off. "You'll get killed，one day!" he'd yell.But the boy took no notice.Exploring bomb sites was an exciting game，and （4）escaping from Old Tin Hat made it even better. （Adapted from Air Raids）
（1）（2）（3）（4）

78．Rewrite the sentences by changing the relative clauses into the -ing form or -ed phrases.
During the Spring Festival，there are many activities that interest people，especially children.

79．Write at least three phrases or sentences for the following catalogue.
（1）Sentence patterns to write the opening of an experience：
（2）Phrases to express your excitement or happiness：
（3）Sentence patterns to write the ending of an experience：

80．I tried my best to persuade father to quit shopping，but I failed completely. （make an attempt to）