警察花了整个下午审问嫌疑人。

The police spent the whole afternoon ___interrogating the suspect.

警察花了整个晚上审问嫌疑人，试图找出真相。

The police spent the whole night ___interrogating the suspect to uncover the truth.

记者在采访中不断追问该政策的细节。

The journalist kept ___interrogating the details of the policy during the interview.