________ the local authorities put more attention to the safety of the children, more then 20 lives_

________ the local authorities put more attention to the safety of the children, more then 20 lives

________ in Gansu Province．

A.Should, would not be claimed

B.Had, would not have been claimed

C.Should, would not be cost

D.Had, would not have been cost

答案及解析： B