— Linda is a hard – working dancer.

— Yes, when she was in the dancing school, she tried many times to pass her dance test, and __________ she succeeded.

A．by the end

B．at the end

C．in the end

D．on the end

制图中的剖面图和剖视图不同，它只将剖面的形状画出来，而没有剖到的部分不画出来。