她驳斥这些说法纯属猜测。

She has dismissed the claims as pure ___speculation.

我强烈敦促你们的组织基于确凿事实而非猜测来撰写报告。

I seriously urge your organization to base your reports on hard facts instead of ___speculation.

关于公司未来计划有很多猜测。

There is much ___speculation about the company's future plans.