记者质疑了政府报告中的统计数据。

The journalist ___impugned the statistical data in the government report.

她在会议上公开质疑对手的诚信，这让很多人感到不安。

She openly ___impugned her opponent's integrity during the meeting, which made many people uncomfortable.

律师质疑了证人证词的可信度。

The lawyer ___impugned the credibility of the witness's testimony.