Luyện ngữ pháp - English Grammar in Use - Intermediate
Unit 81: ’s (your sister’s name) and of ... (the name of the book)

STT	Tên task	Số câu hỏi
1	Grammar Explanations and Rules	1
2	Exercises - 81.1	19
3	Exercises - 81.2	6
4	Exercises - 81.3	5
5	Exercises - 81.4	4

Unit 80: Noun+ noun

Unit 82: Myself/yourself/themselves etc.