他总是在晚餐期间与服务员聊天，并成为他们最好的朋友。

He always chats with waiters and waitresses and becomes their best friends ___during ___the ___course ___of dinner.

在我的学习和实习期间，我不仅与患有某些障碍的人一起工作，还与面临人际关系问题的人一起工作。

___During ___the ___course ___of my studies and internship, I worked not only with people suffering from certain disorders, but also with people who faced problems in interpersonal relationships.

在这一年的过程中，她的语言技能显著提高。

___Over ___the ___course ___of the year, her language skills improved dramatically.