河北黑石材产地在哪里:英语题49~~!!!
来源:百度文库 编辑:神马品牌网 时间:2024/04/27 17:18:33
Last year we had no rain for weeks _________, so there was a serious drought.
A。in end
B。on end
C。at end
D。by end
A。in end
B。on end
C。at end
D。by end
B,连续的on end
相当于continuiously
B,连续地