Why is it important to determine the central isea of a speech or essay

It is important to determine the central idea of a speech or essay because you can better understand the entire speech or essay. Once you understand that speech, you could get help or learn from it.

answer: group ii. when the root is a full word except for a final e, the forms usually are spelled with -able.

explanation: the word will be deplorable. -able will be used with the word 'deplore-'. the group ii is when the root is a full word except for a final e, the forms usually are spelled with -able is used for the word deplore- because the word deplore- has 'e' at the end of it.

greet them:

buenas noches.

that is considered night time which is when "good night" is used.