老师向学生们保证考试不会太难。

The teacher ___assured the students that the test wouldn't be too difficult.

酒店经理向我们保证会提供免费的机场接送服务。

The hotel manager ___assured us of complimentary airport shuttle service.

提前预订确保了我们在旺季能有个房间。

Booking in advance ___ensured us a room during the peak season.

他在面试中表现得非常自信从容。

He appeared calm and ___assured during the interview.