Hi.<br/><br/>There is a common mistake among English learners whose mother tongue are Farsi. Due to language interference, they use <b><i>and</i></b> with <b><i>etc</i></b> .<br/><br/>I wonder if this mistake is common among other learners as well.<br/><br/>I would be grateful if teachers could express their experiences if their students make this mistake too.<br/><br/>Thank you for your time and help in advance