They are waiting for Macbeth<span> to arrive. When he enters the scene, he demands to hear the witches' predictions. They summon their "masters", three ghostly beings who provide </span>Macbeth<span> with vague warnings against </span>Mac Duff<span>, warnings that </span>Macbeth<span> does not listen to in the end.</span>
Yes, the phrase is a sentence fragment. It doesn’t make a complete sentence while standing alone. It’s not a full sentence.
To prepare sanctions; warn
to improve intelligence first the person wants to make people intelligent must be literate and if the people are literate it can be very great because literation leads toward victory and if the people of country are literate the country will be rich because everyone knows where to invest and where to spend money