作为学生，我参加了系里提供的每一个研讨会。

As a student, I attended every ___seminar offered by the department.

她正在为下周准备一个关于人工智能的研讨会。

She is preparing a ___seminar on artificial intelligence for next week.

他存钱去参加专业的研讨会，以提升职业技能。

He saved money to attend professional ___seminars to enhance his career skills.