<p>- Review declining invitations and expressing obligations.</p><p>- Use the Present Simple and “have to”.</p>

<p>Activity files 6</p>

<p><span style="background-color:rgb(255,255,255);color:rgba(0,0,0,0.87);font-size:14px;">Activity files 5</span></p>

<p>Activity files 4</p>

<p>Activity files 3</p>

<p>Activity files 2</p>