25. _______________　　　　　 a wooden bridge across the river.(A) They used to having (B) There used to

問題詳情

25. _______________　　　　　 a wooden bridge across the river.
(A) They used to having
(B) There used to be
(C) There used to have
(D) They used to have

答案：B
難度：非常困難0
統計：A(0),B(0),C(1),D(0),E(0)