12.The woman had trouble falling asleep, so the doctor gave her some ______ to take every night before going to bed.
(A) bills
(B) hills
(C) mills
(D) pills
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統計: A(22), B(9), C(16), D(153), E(0) #693849
統計: A(22), B(9), C(16), D(153), E(0) #693849