炉窑砌筑工程中砌砖用的耐火胶泥要拌匀并必须在（）h内用完
A chart showing all staff positions and responsibilities （） prepared by the Vice President. ["was","has","were","have"]
旅游与交通的关系怎样？
“苏北计划”中，除因不可抗力或特殊原因，志愿者擅离服务岗位达几日或擅自解除协议的，视为违约（）。 ["3日","5日","7日","10日"]
“Knowing English” must mean knowing how to（）in English.
Openreadingframe开放式阅读框
