in the past few years一定要用现在完成时么?可不可以用一般过去式?e.g 在过去的几年里,这家工厂用塑料代替木材来降低成本翻译 In the past few years ,this factory ______wood with plastic to reduce costs.(replace)

问题描述:

in the past few years一定要用现在完成时么?可不可以用一般过去式?
e.g 在过去的几年里,这家工厂用塑料代替木材来降低成本
翻译 In the past few years ,this factory ______wood with plastic to reduce costs.(replace)

是.
不.
has replaced