...the definition and the recognition of viruses and the policy decision about virus control<br/><br/>Do I have to put 'the' in front of definition, recognition and policy decision?<br/><br/>It is very hard for me to determine articles. <img class='emoticon' style='Width:19px;Height:19px;' data-delaysrc='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/6.gif' src='https://uat-englishforward-forums-backend.s3.us-west-2.amazonaws.com/Emoticons/6.gif' alt='Emotion: sad'/>