Help the exhausted detective summarize a dead-end case to her partner.

The suspect has a rock-solid alibi backed by security footage. _______ him further without finding new evidence.

The correct answer is There's no point in interrogating.

In English, the correct fixed expressions are "there's no point in [doing something]" and "it's no use [doing something]." The distractors mix up these phrases by using the wrong dummy subject ("it" vs. "there"), the wrong preposition, or an infinitive verb instead of a gerund.