单项选择题

Please keep a detailed ______ of the work that you have done.

A. paper
B. idea
C. exercise
D. record
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单项选择题
A. Husband and wife.B. Doctor and patient.C. Teacher and student.D. Manager and secretary.
A. Husband and wife.
B. Doctor and patient.
C. Teacher and student.
D. Manager and secretary.
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