52单词网 > 高中英语 > 高中英语题库 > The house had been on fire for an hour the firefighters arrived. [ ]A. afterB. b

The house had been on fire for an hour the firefighters arrived. [ ]A. afterB. b

来源:网络 时间:
The house had been on fire for an hour the firefighters arrived. [ ]A. afterB. b

The house had been on fire for an hour ________ the firefighters arrived. [     ]A. after
B. before  
C. until
D. while

试题答案

B