Hi teachers,<br/><br/><a class='_ac _lb' lightbox='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/1714617.0_rq7cdxwx848d.jpg '><img class='_ac _di img-fluid' style='width:598px; height:inherit; background: inherit;' data-delaysrc='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/1714617.0_rq7cdxwx848d.jpg' src='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/1714617.0_rq7cdxwx848d.jpg' /></a><br/><br/><a href='http://news.yahoo.com/10-things-know-monday-104352258.html' target='_blank' rel='nofollow'>http://news.yahoo.com/10-things-know-monday-104352258.html</a><br/><br/>What does the "for" the red arrow indicates mean?