Oxford Practice Grammar Basic Tests (30 pages)
https://elt.oup.com/elt/students/practicegrammar/oxford-practice-grammar-basic-tests.pdf

Oxford Practice Grammar Basic Tests – Key to the Tests (5 pages)
https://elt.oup.com/elt/students/practicegrammar/oxford-practice-grammar-basic-tests-key.pdf

Oxford Practice Grammar Intermediate Tests (58 pages)
https://elt.oup.com/elt/students/practicegrammar/oxford-practice-grammar-intermediate-tests.pdf

Oxford Practice Grammar Intermediate Tests – Key to the Tests (13 pages)
https://elt.oup.com/elt/students/practicegrammar/oxford-practice-grammar-intermediate-tests-key.pdf

Oxford Practice Grammar Advanced Tests (44 pages)
https://elt.oup.com/elt/students/practicegrammar/oxford-practice-grammar-advanced-tests.pdf

Oxford Practice Grammar Advanced Tests – Key to the Tests (6 pages)
https://elt.oup.com/elt/students/practicegrammar/oxford-practice-grammar-advanced-tests-key.pdf