高中英语时态题
He___articlesforourwall-newspaperthesethreeyears,andhe____aboutfortyarticles.
A.hasbeenwriting;haswrittenB.hasbeenwriting;wrote
C.iswriting;hasbeenwritingD.haswritten;haswritten
请说明为什么不选b过去时态,不就是过去写了40篇文章吗?