問題詳情

【題組】15. Kevin and I occasionally go to school on our skateboards to help reduce carbon emissions.
(A) sometimes
(B) often
(C) usually
(D) constantly

參考答案

答案：A[無官方正解]
難度：適中0.5
統計：A(4),B(0),C(2),D(2),E(0)