The sentence should be written like.
"Our holiday should of been relaxing, but it was very stressful."
<h2>Hey there! </h2>
<h2>I guess the correct answer is:</h2>
<h3>'D' I'm feeling a bit ill. </h3>
<h2>I hope it helps you </h2>
<span>This is a true statement. Images, when used sparingly and in concert with data and information that fits the scope of the image, can greatly increase the impact of a presentation. This is especially true when playing to emotions: people who are emotionally stirred by a presentation will be much more likely to remember what was presented than people who become blase during the time spent.</span>