Thereareseveralfactors

发布时间：2020-07-12 05:46:38

There are several factors _______ in the economy _______ make it difficult to predict the future.












A.operate; where











B.operating; which










C.to operate; that










D.operated; what

网友回答

B
以上问题属网友观点，不代表本站立场，仅供参考！