title: Replace apostrophe/short words in python
body: <p>I am using python to clean a given sentence. Suppose that my sentence is:</p>
  
  <pre><code>What's the best way to ensure this?
  </code></pre>
  
  <p>I want to convert:</p>
  
  <pre><code>What's -&gt; What is
  </code></pre>
  
  <p>Similarly,</p>
  
  <pre><code> must've -&gt; must have
  </code></pre>
  
  <p>Also, verbs to original form,</p>
  
  <pre><code>told -&gt; tell
  </code></pre>
  
  <p>Singular to plural, and so on.</p>
  
  <p>I am currently exploring textblob. But not all of the above is possible using it. </p>