23. (Correct mistakes) Drug addiction(a) will cause stimulating effect(b) which destroys the young before he(c) can live and the aged(d) before they can die. 

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統計： A(3), B(15), C(87), D(35), E(0) #571486

詳解 (共 2 筆)

#860113
C they
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#7382412
(C) he → they the y...
(共 59 字，隱藏中）
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