问题
选择题
Using _____ illegal drugs can lead to health problems, and it can be _____ stain on one’s life.
A．不填；the
B．the; the
C．the; a
D．不填； a
答案
答案：D
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Using _____ illegal drugs can lead to health problems, and it can be _____ stain on one’s life.
A．不填；the
B．the; the
C．the; a
D．不填； a
答案：D