Question

we must not dine before he arrives ( use noun form of arrive)​

Answer 1

Answer:

Noun form of (Arrive) is Arrival

Answer 2

Explanation:

The word arrive is a verb .

The noun form of the given verb will be "Arrival " .

Since , Arrival is a noun then it must not be written after a pronoun..

Rather we have to convert it into determiner .

"He " is a pronoun .

Its determiner form is possessive adjective of " he " is his .

Given sentence :- We most not dine before he arrives .

Answer according to the question is :-

We must not dine before his arrival .