7.It is raining, so my mother doesn’t allow me to swim (A) on (B) in (C) by (D) at the river.

問題詳情

7.It is raining, so my mother doesn’t allow me to swim
(A) on
(B) in
(C) by
(D) at the river.

答案：B
難度：適中0.641304
統計：A(15),B(118),C(7),D(25),E(0)