6．difference　 指两者之间的不同点，故用名词。

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At half 　1　 　five, Mrs Black heard her husband park the car 　2　 　the house and went out to speak to him right away.

“What’s wrong with you? ” he asked. “You look worried.” “I have 　3　 　a terrible mistake, dear,” she said. “Mrs Smith called me half 　4　 　hour ago. We got talking and then 　5　 　thinking, I asked her and her husband to come to have dinner 　6　 　us this evening.”

“Well, that’s 　7　 　to be worried about,” Mr Black said. “We will have a pleasant 　8　 . We haven’t seen the 　9　 　for a long time.” “I’d like them 　10　 ,” Mrs Black answered.． “But I’ve just 　11　 　there is almost not any food at home. You didn’t remember 　12　 　some. I asked you to get some 　　 13　　 　 your way home from work three days ago.”

“Some food? ” Mr Black said. “Oh, my dear, yes, I 　14　 　now. I did buy some. It’s in the car. It’s been there for the 　15　 　three days.”

解析　 答案：1．A　 表示几点半用past，超过半用to。

5．inventor　 发明家，在invent后加or。

4．useful　 非常有用，需要形容词。

3．Americans　 五个美国人，应用复数形式。

2．Travellers　 这里需要主语，故用名词且要用复数。

6．The students don’t know the 　　　　(different) between the two sentences.

解析　 答案：1．widely　 在此处作状语。

5．Edison was a great American 　　　　(invent).

4．I think Chinese is very 　　　　(use), too.

3．Five 　　　　(American) have arrived here.

2． 　　　　(travel) also use computers.