問題詳情

When the phone rang, I _____________ reading the financial report.
(A)was to concentrate on
(B)would be concentrate on
(C)could have been concentrating
(D)was concentrating on

參考答案

答案:D
難度:簡單0.876777
統計:A(18),B(19),C(15),D(370),E(0)

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