The correct plural form of echo is echos or echoes. Either way it is grammarly correct. I believe that echoes is the correct form.
echoes
The base form of the verb refers to the verbs which do not have any ending such as -ed, -ing, -s.
In the present tense all the base form of the verb appears except the third person singular.
<em>For example-</em>
1st person singular- I eat
2nd person singular- you eat
<u>3rd person singular- he/she eats</u>
1st person plural- we eat
2nd person plural- you eat
3rd person plural- they eat.
C. Mrs. Lucretia
I Recall Reading A Book About Frederick Douglass. I Believe It Mentioned This.
Brainstorm and get some ideas then write it look for small mistakes when u finish writing or let someone else judge it to is good