Testifying before the committee, she remained calm while answering difficult questions.

The witness testifies that she saw the defendant leaving the building.

The witness testified that she had seen the defendant near the park last night.

The witness's observations were testifiable, making them admissible in court.

Several testifiers described the events in detail during the hearing.

The testifier took the stand and recounted the events in detail.

The witness agreed to testify at the trial even though she was nervous.