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