be on to
中级 (B1) informal
To know about something secret, to think someone is doing something wrong, or to be talking to someone.
"The investigative journalist felt she was on to something big with this story."
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Why is Everything So Boring Now?
Kurtis Conner · 4:45
be on to something.
The Ones Where They See Things They Weren’t Supposed to See | Friends
Friends · 25:34
She may be on to us.
Enhance Your Physical & Mental Resilience (HRV, Respiratory Rate, RHR)
Andy Galpin · 92:52
baseline, then you could be on to
The Last Late Late Show: Chapter 2 — Carpool Karaoke
The Late Late Show with James Corden · 4:43
we could be on to something here and
Lesson 1: Climbing, Descending, Straight & Level Flight | C152 Flying Lessons with ForderLearnToFly
Microsoft Flight Simulator · 36:58
know that break has to be on to make