1.Of the two pencil-boxes,the boychose _____one.

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1.Of the two pencil-boxes,the boychose _____one.
A.less expensive B,the less expensive C.the least expensive D.the most expensive
2.My glasses are broken.I will have tobuy________.
A.a new one B.new ones C.another one D.a new pair
3.These recorders are used______studentshearing.
A.to helping to improve B.to help improve
C.to help improving D.helping to improve
.4—Why didn’t Ann come to see us yesterdayas she had promised?
----_________.
A.She must be busy B.Shemight not be free
C.She must have been busy D.She can’t be free
5._______hard all these people are working!
A.What B.What a C.How D.How a

1、B a less expensive one=a less expensive pencil-box 一个更便宜的铅笔盒
2、D a new pair=a new pair of glasses 一副新眼镜
3、B sth be used to do 某物被用来做某事；help sb do sth 帮助某人做某事
4、C must have done 表示对过去情况的推测判断
5、C 感叹句,修饰副词hard,用how.

祝你开心如意!

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