84.　　 Waste things should ____________________ about, boys. Everyone should do his or her contribution to keeping the environment good.　 (not litter)

83.　　 Mike said that he ____________________ to buy a new watch instead of repairing it from time to time.　 (prefer)

82.　　 These are the things that ____________________ by Mr King online a week ago.　 (order)

81.　　 No matter what he does, he ____________________ it well.　 (do)

80.　　 I begged him to leave, but he ____________________.　 (refuse)

79.　　 At first I ____________________ her. So I didn’t know what to call her.　 (not know)

78.　　 I failed ____________________ the mistakes in the letter. The teacher helped me later on. (correct)

77.　　　 我们到了一个小时了！你到哪儿去的？

We’ve 　　　　　　　　　　　　　　　! Where 　　　　　　　　　　　　　　　　　　　　?

76.　　　 他说他两天以前就听说此事了。

He said that he 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　.

75.　　　 我深信他对此次愉快的中国之行会记忆久远的。

I’m sure that 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　will last long.