─Do you know second-hand smoke?
─To prevent our health and memory.
A.how we should prevent |
B.where should we prevent |
C.why we should prevent |
D.whether we should prevent |
─Do you know second-hand smoke?
─To prevent our health and memory.
A.how we should prevent |
B.where should we prevent |
C.why we should prevent |
D.whether we should prevent |
试题篮
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