Question

Do as directed :
(i) I'm not able to. (Rewrite using a modal auxiliary.)​

Answer 1

Answer:

I can't do it.

Explaination:

A modal verb is a type of verb that is used to indicate modality – that is: likelihood, ability, permission, request, capacity, suggestions, order, obligation, or advice. Modal verbs always accompany the base form of another verb having semantic content.

hope it helps.

Answer 2

Answer:

i have to achieve excellence