27. We were told that we should follow the main road we reached the central railway station .(A)when

問題詳情

27. We were told that we should follow the main road we reached the central railway station .
(A)whenever
(B)until
(C)while
(D)wherever

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)