问题
选择题
What the doctor warned us is that the _____ sleep may cause anger，poor memory and poor
concentration. [ ]
A. want in
B. plenty of
C. lack in
D. lack of
答案
答案：D
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What the doctor warned us is that the _____ sleep may cause anger，poor memory and poor
concentration. [ ]
A. want in
B. plenty of
C. lack in
D. lack of
答案：D