What the doctor warned us is that the __
题型：选择题
问题：
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
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