医生需要认证这些医疗报告的真实性。

The doctor needs to ___certify the authenticity of these medical reports.

完成培训后，他被认证为专业电工。

After finishing the training, he was ___certified as a professional electrician.

医生必须先证明患者患有精神疾病，才能下令进行强制治疗。

The doctor had to ___certify the patient as mentally ill before ordering compulsory treatment.