He_____rticles for our wll-newspper these yers nd he____bout thirtyrticles.hs written;He_____rticles for our wll-newspper these yers nd he____bout thirtyrticles.hs written; wrote B.hs been writing

A．has written; wrote

B．has been writing; wrote

C．is writing; has been writing

D．has been writing; has written

请帮忙给出正确答案和分析，谢谢！