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Help the ambitious science student explain her highly unusual experiment to her skeptical professor by choosing the correct prepositions.
"Professor, I must insist _________________________ conducting this experiment with the radioactive hamsters. My entire thesis depends _________________________ their ability to run in the wheel at light speed. I know you object _________________________ the potential danger, but I believe _________________________ my safety protocols!"
The correct prepositions are on, on, to, and in.
We say insist on doing something. Things depend on other things (never depend of or depend from). You object to an idea or action. You believe in something when you trust its value or existence.