Key english test 7, with answers, Ducker P., Lawton D., 2014.
Cambridge English: Key, also known as the Key English Test (KET), is part of a comprehensive range of exams developed by Cambridge English Language Assessment. Cambridge English exams have similar characteristics but are designed for different purposes and different levels of English language ability. Cambridge English: Key is at Level A2 (Waystage) of the Council of Europe's Common European Framework of Reference for Languages (CEFR). It has also been accredited in the UK as an Entry Level 2 ESOL certificate in the UK's National Qualifications Framework.