William Smythe Wanted to Create a Scale That Measured the Likelihood

Short Answer

William Smythe wanted to create a scale that measured the likelihood that people will burst out in laughter in a movie theater. So far, he has four items written. These three items yielded a Cronbach's alpha of 0.50 and the following output:
Given what you know about Cronbach's alpha and improving internal consistency, describe the ways in which Will Smythe could potentially increase the internal consistency of his scale (hint - there may be more than one way)?
$\begin{array}{|lc|}\hline & \begin{array}{l}\text { Item-Total } \\\text { Correlations }\end{array} \\\hline \text { Item 1 } & 0.767 \\\text { Item 2 } & 0.629 \\\text { Item 3 } & 0.105 \\\text { Item 4 } & 0.520 \\\hline\end{array}$
Given what you know about Cronbach's alpha and improving internal consistency, describe the ways in which Will Smythe could potentially increase the internal consistency of his scale (hint - there may be more than one way)?