This book has around 48 lessons
Lessons
The nouns in the sentence are Stella, lessons, and age.
No. It should be, "He could not attend any of his lessons."
Simple Subject: museum Simple Predicate: lessons
He gave us lessons on how to paddle a canoe.
There are 2 pronouns in this sentence, "he" and "her".
guitar lesson
I formerly participated in piano lessons. What was your occupation, formerly?
There is not one, my young apprentice. I see you have much to learn from my lessons
James is eager to get start guitar lessons.
Yes, that's a correct sentence.
I am studying my grammar lessons right now.