问题补充:
单选题Thebridgeissoimportanttothepeopleherethatonce________itmustbecarriedoutwithoutdelay.A.designsB.having designedC.designingD.designed
答案:
D解析这里用过去分词,相当于一个状语从句,完整的句子是: once if it is designed.
时间:2018-08-31 13:12:45
单选题Thebridgeissoimportanttothepeopleherethatonce________itmustbecarriedoutwithoutdelay.A.designsB.having designedC.designingD.designed
D解析这里用过去分词,相当于一个状语从句,完整的句子是: once if it is designed.