题目选项分析

Going ahead without their having a definite plan for upcoming labor negotiations, as they agreed to last year, it would surely have proven to be a disaster for the firm in the face of the skilled and resolute opposition involved this time.

Proceeding without a definite plan for upcoming labor negotiations, as the firm agreed last year to do, would surely have proven to be a disaster in the face of the skilled and resolute opposition involved this time.