Answer:
I'm glad you asked!
Explanation:
I prefer websites,but I will tell some apps.
1.Grammerly
2.Hemingway
3.ProWritingAid
4.WhiteSmoke
5.Online Correction
Answer:
She has found out his plan
Sorry that is my best description
Correct me if I'm wrong but I believe it is phrase or clause containing three or more words at the beginning or end of a sentence.