Those who _____ in ____ compositions, please hand them in this afternoon.

A．hasn't handed; his

B．haven't handed; their

C．has handed; their

D．have handed; his

FIDIC《施工合同条件》为了合理地分担风险责任，定义投标截止日期前第28天为“基准日”，从此日期起至( )止的期间内，有经验承包商在投标阶段不能合理预见的风险归业主承担。

A．开标

B．工程师发布开工令日

C．工程师颁发工程接收证书日

D．工程师颁发履约证书日