34 Aspirin can be poisonous when_____ in excessive amounts.
(A) taken
(B) taking
(C) is taken
(D) to be taken

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統計： A(307), B(170), C(53), D(34), E(0) #646272

詳解 (共 1 筆)

#922836
Aspirin can be poisonous when (Aspirin was) taken in excessive amounts. 
連接詞前後主詞相同 可省略主詞
阿斯匹靈是物品，所以用被動式

 
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