His spoken English ___ in the past few years.

问题描述:

His spoken English ___ in the past few years.
A was improved B has improved C has been improved D improved 选什么,为什么?improve什么情况下用被动,什么情况主动表被动?谢

C
首先是被动,所以be improved
然后在过去的几年中,表示现在完成时
用 has
结合起来就选择C