Deducted one star for lack of explanations and weak support for writing/speaking. Still, as a straightforward answer key, it does exactly what it promises – and does it efficiently.
"New Headway Intermediate Test Answer Key" seems to refer to a specific resource related to the "New Headway" English language course, which is a popular series of English language learning materials. The "Intermediate" level suggests it's aimed at learners who have moved beyond the beginner stage and are working on more complex language structures and vocabulary. New Headway Intermediate Test Answer Key
978-0-19-454758-5