Do your students ask questions like these?'What are the language topics I really need to study?''Do all the rules work in practice?' 'That just sounds wrong to me - but why?'Practical English Usage Diagnostic Tests have been written with these students in mind. It provides exactly the right material for students who want to understand the subtle differences in English, who aspire to be skilled speakers of English, and who want to succeed in international exams at B2 - C2 level. It's high level material for high level students.The tests identify the language areas students know, as well as the areas they don't yet fully understand. By using the tests with Practical English Usage Third Edition students follow up on the language areas that are causing them problems, they can achieve a much higher level of English.