Hello teachers,<br/><br/><a class='_ac _lb' lightbox='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/1767471.0_rmykxqyhz7dt.png '><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/1767471.0_rmykxqyhz7dt.png' src='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/1767471.0_rmykxqyhz7dt.png' /></a><br/><br/><a href='http://www.loadingdock.org/membership_purchase/agreement.html' target='_blank' rel='nofollow'>http://www.loadingdock.org/membership_purchase/agreement.html</a><br/>Only staff are allowed to use TLD equipment.<br/><br/>- Only staff is allowed to ...<br/>- Only staff are allowed to ...<br/><br/>Which is correct?