她对中国文化的深入了解让当地导游感到惊讶。

Her ___familiarity with Chinese culture surprised the local tour guide.

他的过分亲昵让新同事感到不适。

His excessive ___familiarity made the new colleague feel uncomfortable.

办公室里的过分亲密行为引起了同事们的议论。

The inappropriate ___familiarities in the office sparked gossip among coworkers.