I don't see a place on the English2Test.com website where I can send suggestions. I've written all kinds of similar quizzes (hyphens, apostrophes, less-fewer, parts of speech, and on and on). I'd love to get them posted for anyone to use (especially my students). There are various websites that allow self-checking, but yours seems very user-friendly.
Lil,
we are anxiously very open to use your quizzes. Please give my colleague a couple of hours to complete contact page then send us as much as quizzes you can. We will use all of them with a reference back to you (whatever you specify: your site or email) :)
I come back to you soon... Thanks
Lil, During completing contact form of the site, you can send your multi answer quizzes to us by email: info (a) english2test.com. Please let us know the address which we can use it as the reference back to you. Thank you very much
Lil, You can contact us using the contact form of the site or the email address I specified above.