(　　)20. Mom asked me not to study and listen to music ________ the same time.
(A) at　
(B) in　
(C) on　
(D) for

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統計： A(70), B(21), C(5), D(2), E(0) #359807

詳解 (共 1 筆)

#945986

at the same time.  同時

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