1.---What can I do for you?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/08/31 07:11:34

1.---What can I do for you?
---I'd like to buy a present for my son,______at a proper price but of great use.
A one B the one C which D that
2.Progress so far has been very good.We are ,________,confident that the work will be completed on time.
A.however B otherwise C therefore Dbesides
3.It might rain tomorrow,______we'll have to put off the sports meeting until next Friday.
A in case that B if possible C in case D in which case

1.A one 为正确选项.
这里的one是做前面present的同位语,而后面的at a proper price but of great use则做后置定语修饰one的.也可以把one at a proper price but of great use看作是定语从句one that is at a proper price but of great use的省略.其余三个选项都不具备做同位语的功能；
2,C therefore 为正确选项.
第一个句子的意思是,“到目前为止,（工作的）进展不错.”,而第二个句子的意思是,“我们相信能准时完成工作.”由此而知,前面两个句子有因果关系,用therefore；
3,D in which case为正确选项.
后面的句子是个非限制性定语从句,先行词是前面整个句子It might rain tomorrow,关系代词是which.其它选项都不对.句子的意思是,"明天可能下雨.如果这样的话,我们要把运动会推迟到下星期五."

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