()
A.98
B.49
C.28
D.21
参考答案:C
解析:
原式[*]
When I walked ______ the station, I saw the accident ______. [ ]
A. past; to happen
B. passed; happened
C. past; happen
D. psst; happening
打开前雾灯开关,(如图所示)亮起。