This book is Exercise and Answers of A Practical Chinese Grammar.
 
A Practical Chinese Grammar is a comprehensive and systematic Chinese grammar book. It is especially compiled for foreign Chinese learners. It can be used as textbook for junior and senior foreign students majoring in Chinese, self-taught learners, undergraduate and graduate students majoring in Teaching Chinese as a Foreign Language and teachers of Chinese as a foreign language.
 
Since its publication in 1992, it has achieved widespread influence in the field of teaching Chinese as a foreign language and has been adapted as textbook by many colleges and institutes of teaching Chinese as a foreign language. The second version is more applicable. Grammatical explanations are more sufficient and examples are more standardized and topical.