critical - structure is ruptured in critical strength.
echoed - When I get a phone number from other, I echo it not to forget. (The word "echo" may be replaced by a more appropriate word that is more suitable with the context. For example, When I memorize a phone number, I mumble it so I cannot forget.)
amendment - In the closing hour, abruptly I got a call regarding amendment in that project.

Be guided with the following.

-Begin a sentence with a capital letter.

-Practice coherence and preciseness. Focus on clarity, not on the length of a sentence.