問題詳情

25.Lots of rescue workers were working around the clock, supplies to yushu.Oinghai province after the earthpuake....
(A)sending
(B)to send
(C)having sent
(D)to have sent

參考答案

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