What book is Greg talking about?

Homework due before Session 10: Please complete ALL the text completion and sentence equivalence problems that we did not discuss in the previous lesson from Mixed Practice Set 3 in the Verbal Practice Book .

What book is he referring to? Is it the “official GRE verbal reasoning practice questions” by ETS book? And its the page 150?

Yeah, that book, the page number will vary depending on the edition of the book you have