Here is the sentence again:

After a successful interview at a bookstore, Julio patiently waited by the phone, hoping to hear that he had gotten a summer job, every call, though, was a twelve-year-old boy calling for Rosita, Julio's younger sister.

Julio patiently waited by the phone is a main clause. Every call was a twelve-year-old boy is a second main clause. These two main clauses have only a comma separating them, which is illegal in writing.

The best way to fix this sentence would be to put a period after job and capitalize the E for every.

Congratulations! You have finished Exercise 2!

Return Home.

Go to Exercise 3.

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