The endocrine system sends hormones through the blood to control the activities of tissues and organs.
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<h3>Which verb form correctly completes this sentence? El próximo verano, Alejandro _______ a mochilear a la montaña Cotopaxi.</h3><h3>A. Irá B. Iremos C. Irán D. Irás </h3>
Answer: A.) El próximo verano, Alejandro irá a mochilear a la montaña Cotopaxi.
Translation: Next summer, Alejandro will go backpacking to the Cotopaxi mountain.
Explanation: The subject in this sentence is Alejandro, that is the third-person in the singular, so the verb must be conjugated in this form. Él irá.