問題詳情

27. Vivian is practicing ____ with her friends in the park.
(A) to roller-skate
(B) rollering-skat
(C) roller-skating
(D) to roller-skating

參考答案

答案：C
難度：簡單0.7
統計：A(0),B(3),C(7),D(0),E(0)