题目内容
(请给出正确答案)
[主观题]
A.He is one of the Procrastination Research Group.B.He is a psychologist.C.He is a tea
A.He is one of the Procrastination Research Group.
B.He is a psychologist.
C.He is a teacher in Carleton University in Ottawa.
D.He is the co-author of the study.
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