Answer:
The correct word that fill the blank is:
<em>- </em><em>Juan fue </em><em><u>al</u></em><em> teatro ayer.</em>
Explanation:
The translation of the sentence is:
- Juan went <u>to the</u> theater yesterday.
In Spanish, there are some grammatical contractions that seek to accelerate the pronunciation of two words and in turn create more effective communication, One of the most common cases is that called <em>"</em><em>sinalefa"</em>, where two short words, the first ending in a vowel and the second starting in a vowel, are pronounced by just one voice:
Examples:
- <em>D</em><em><u>e</u></em><em> </em><em><u>e</u></em><em>l: Del.
</em>
- <em><u>A</u></em><em> </em><em><u>e</u></em><em>l: Al.
</em>
In the second case, <u><em>"al"</em></u> is used to mention a place to which the noun is directed, which could be replaced in English by words like "at the" or "to the".