He told me that by the end of this year they______together for twenty years．

A．would work

B．had been working

C．will have worked

D．would have been working

在建设工程设计合同的履行中，属于发包人责任的有( )。

A．对勘察资料的正确性负责

B．提供设计人在现场的工作条件

C．设计成果完成后向设计审批部门办理报批手续

D．完成施工中出现的设计变更

E．负责设计人与承包人的工作协调