問題詳情

21. So far, a lot of trees in the mountains ___________ away.
(A) are cut 
(B) were cut 
(C) have been cut 
(D) will be cut

參考答案

答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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