7과 문법 - 현재완료, 과거완료 등 시제와 관련된 문제들

http://www.learnenglishfeelgood.com/english-simple-past-present-perfect2.html

http://www.usingenglish.com/quizzes/228.html

http://www.learnenglishfeelgood.com/simple-past-present-perfect1.html

http://www.usingenglish.com/quizzes/291.html

http://www.ego4u.com/en/cram-up/tests/present-perfect-simple-2