Smith argued (2000) that the wool industry ()(be) experiencing difficulties related to falling demand.
Smith argued (2000) that the wool industry ()(be) experiencing difficulties related to falling demand.这是一个关于研究生英语科技论文写作的相关问题,下面我们来看答案是什么,Smith argued (2000) that the wool industry ()(be) experiencing difficulties related to falling demand.A.wereB.isC.wasD