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专升本
I am not sure whether he can ______his efforts much longer as he looks very exhausted.
I am not sure whether he can ______his efforts much longer as he looks very exhausted.
admin
2016-01-01
24
问题
I am not sure whether he can ______his efforts much longer as he looks very exhausted.
选项
A、keep up
B、keep on
C、keep up with
D、keep at
答案
A
解析
A项keep up意为坚持,继续,符合句意。B项keep on意为继续进行,继续下去。常接动词一ing形式,如:We kept on working in the fields in spite of the rain.尽管下雨,我们还是坚持在地里劳动。不能说keep on one’s efforts。C项keep up with意为跟上。D项keep at意为坚持做,不停地做。不与efforts搭配使用。
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本试题收录于:
英语题库普高专升本分类
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英语
普高专升本
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