He ________ two tickets for us before he arrived at the entrance of the cinema.

A．had reserved

B．has reserved

C．was reserving

D．has been reserving

贷款重组是指借款企业由于财务状况恶化或其他原因而出现还款困难，银行在充分评估贷款风险并与借款企业协商的基础上，修改或重新制订贷款偿还方案，调整贷款合同条款，控制和化解贷款风险的行为（）