<span>The </span>theme<span> of the </span>mysterious stranger<span> is </span>common<span> in </span>literature<span>. In the </span>traditional form<span> of this </span>theme<span>, a </span>mysterious stranger appears<span> in the </span>life<span> of an </span>individual<span> or </span>community<span>. </span>Often<span>, in a </span>series<span> of </span>dramatic events<span>, the </span>stranger makes<span> a </span>sacrifice through<span> which the </span>life<span> of an </span>individual<span> or </span>community<span> is </span>improved<span>.</span>
I believe that is an imperative sentence because it is giving a command.
