Longman grammar practice for Intermediate
Tasks 8.2B (4 mistakes) and 8.2C (2 mistakes)
Tests from internet:
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-18565.php (2 mistakes from 10 questions)
http://www.tolearnenglish.com/cgi2/myexam/voir2r.php?id=11455 (7 mistakes from 10 questions)
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-68268.php (1 mistake from 10 variants)
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-48582.php (3 mistake from 10 variants)
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-39154.php (1 mistake from 10 variants)
I think I should be more confident when make a decision consequently remember rules again.