Question

1. I can't but do it. ( rewrite using the sentence help)​

Answer 1

Answer:

I can't do it but.

that answer sounds weird

Answer 2

Correct Answer :

I can't help doing it.

Structure :

Subject + cannot + help + participle (verb+ing) + Object

Extra Information :

When we say cannot/can't help doing something it means that we can't stop ourselves doing it. The same meaning is conveyed by cannot but do (verb) construction.