<h4><b>Study the sentences and choose <i>a </i>or <i>b </i>in the explanations.</b></h4><p><b><br></b></p><h3><b>1. I wish I had learned how to listen to my son sooner.&nbsp;</b></h3><p><b><br></b></p><h3><b>a. In the above sentences, the speaker expresses .........<br></b><b>[[1]]</b></h3>