19.Helen’s classmates are surprised __________ her good grades because they don’t know she studies h

問題詳情

19.Helen’s classmates are surprised __________ her good grades because they don’t know she studies hard at night.
(A)about
(B)at
(C)with
(D)to

答案：B
難度：非常簡單1
統計：A(0),B(4),C(0),D(0),E(0)