Hello,<br/><br/>1. She can speak six languages. (ability)<br/> A. She is able to speak six languages.<br/><br/>2. The problem can resolved. (possibility)<br/><br/>It is possible to resolve the problem.<br/><br/>3. The decision cannot be reverted. (possibility with 'not')<br/><br/>It is not possible to revert the decision.<br/><br/>4. she can use my pen. (permission)<br/><br/>She is permitted to use my pen.<br/><br/>5. Can I leave early today?<br/><br/>Am I allowed to leave early?<br/><br/>6. Can you please check my answers?<br/><br/>Your are requested to check my answers.<br/><br/>Could anyone check my answers?<br/><br/>Thanks.