2. I am very busy _____ the moment. Please come back some other time.
(A) at
(B) on
(C) for
(D) over

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統計: A(17), B(2), C(2), D(0), E(0) #3487940

詳解 (共 1 筆)

#6703386
題目解析 這道題目的句子是「I am ...
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