问题
单项选择题
Professor Smith promised to look（）my paper, that is, to read it carefully before the thesis defense.
A.after
B.over
C.on
D.into
答案
参考答案：B
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Professor Smith promised to look（）my paper, that is, to read it carefully before the thesis defense.
A.after
B.over
C.on
D.into
参考答案：B