問題詳情

19.There are some health problems that, when ______ in time, can become bigger ones later on.   
(A)not treated
(B)not being treated   
(C)not to be treated
(D)not have been treated

參考答案

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

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