English Language Quizzes – UsingEnglish.com
Look under “Intermediate English”, then Adjectives and Adverbs. Take the Adjective or Present Participle? quiz (10 questions – no more than 2 minutes). I missed one answer. Tell me how you do.
There are a ton of other interesting grammar quizzes if present participles don’t float your boat. (you don’t have to register to take the quizzes).
Good luck!