Do you remember_____coming to see us last June?
A. Mary and her mother"s
B. Mary and her mother
C. Mary"s and her mother"s
D. her mother and Mary"s
When the crowd saw the queen on the street, shouts and cheers_____.
A. broke through
B. broke up
C. broke forth
D. broke off
生产用水和饮用水系统分质供水时,两套系统的管网()。
A. 必须连通
B. 不能连通
C. 可以连通,但必须有空气隔离措施
D. 没有一定的连通要求