encounter|encountered|encounters|encountering

我们在开始时遇到了不少问题。

We ___encountered quite a few problems at the beginning.

压力和焦虑常在成年生活中遇到。

Stress and anxiety are often ___encountered in adult life.

她独自旅行时遇到了一些困难。

She ___encountered some difficulties while traveling alone.

你在国外期间遇到过任何文化误解吗？

Did you ___encounter any cultural misunderstandings during your stay abroad?

医生在急诊室经常遇到各种罕见疾病。

A doctor often ___encounters various rare diseases in the emergency room.

在野外遇到稀有物种时，生物学家仔细记录了它的行为。

While ___encountering a rare species in the wild, the biologist carefully recorded its behavior.