問題詳情

(  )14.Andy was talking on the cellphone while his wife ________ up the bathroom.
(A) cleaned 
(B) will clean 
(C) is going to clean 
(D) was cleaning

參考答案

答案:D
難度:困難0.321839
統計:A(21),B(2),C(28),D(28),E(0)

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