单项选择题

A．Her taking improper sleeping medications.
B．Her having unusual stress lately.
C．Her having a poor digestion.
D．Her having insufficient physical activities.
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单项选择题
A．Write their lab report.B．Find out Professor Smith’’s schedule.C．Interview some high school students.D．Finish their chemistry experiment.
A．Write their lab report.
B．Find out Professor Smith’’s schedule.
C．Interview some high school students.
D．Finish their chemistry experiment.
单项选择题
No one lives in the region of the lakes.
A．Y
B．N
C．NG
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