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【单选题】
— Is there any possible way to help the children get rid of such a bad habit? — To be honest, it's very hard, but we ____ on this problem. [ ]A.
work
B.
worked
C.
are working
D.
were working
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举一反三
【多选题】Read the passage- Common Diseases of the Body Systems again and tick off the facts mentioned in the passage about the common diseases of the body system.
A.
Our ability to fight human body diseases
B.
Various disorders of the nine body systems
C.
The skin featuring its susceptibility
D.
An introduction to the new cures for the diseases
E.
Disorders typical of the body systems
F.
Alcoholism contributing to digestive diseases
G.
Two types of immune disorders
【多选题】Tick off the facts mentioned in the passage about the common diseases of the body system.
A.
Our ability to fight human body diseases
B.
Various disorders of the nine body systems
C.
The skin featuring its susceptibility
D.
An introduction to the new cures for the diseases
E.
Disorders typical of the body systems
F.
Alcoholism contributing to digestive diseases
G.
Two types of immune disorders
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