—What are you doing, Uncle Wang?

—I am sorting out old books and I’ll        to kids in West China. 

A．give them up

B．give them away

C．give them off

D．give them in

卡线器的规格、材质应与线材的（）相匹配。不得使用有裂纹、弯曲、转轴不灵活或钳口斜纹磨平等缺陷的卡线器。