Theory and examples 
Verb ‘use’ to express habits
Adjective+ preposition combination: page 1 and page 2
Gerund or infinitive interactive tool: find out which one follows a verb
Quizzes:
Conditional forms quiz
Verb+ preposition: quiz 1 and quiz 2
Advanced English grammar review quiz
Adjective- preposition combinations: quiz 1 and quiz 2
Gerund or infinitive: quiz 1 and quiz 2
Related article on YourDictionary.com : The 5 most common grammatical errors
