問題詳情

21.( )Jacob _____ care of the dog _____ he found it at the door a year ago.    
(A) took ; if
(B) has taken ; since
(C) is taking ; while
(D) has been taken ; after

參考答案

答案:B
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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