Answer:
Strong, comma
Step-by-step explanation:
An Interjection is described as a word or phrase with no grammatical relation to the sentence but function to display the emotions or feelings of the writer. They are placed at various parts of the sentence to show different types of emotions like strong or mild. It is followed by an exclamation point when a strong emotion is portrayed while a comma follows the interjection if the reaction is mild. For example,
Well! he can't help you with this.(Strong emotion)
I was walking on the road when, ugh, she slipped into the drain.(mild reaction)