CLASSIFYING SENTENCES BY STRUCTURE Classify each of the following sentences according to its structure. Decide whether the sentence is compound, complex, or compound-complex. Sometimes the air that is rushing in begins to rotate, and a tornado is formed. a. compound c. compound-complex b. complex Please select the best answer from the choices provided

The sentence has two independent clauses: “the air ... begins to rotate” and “a tornado is formed,” joined by “and.” It also contains the dependent clause “that is rushing in,” which describes “air.” A sentence with at least two independent clauses and at least one dependent clause is compound-complex, so the correct choice is “compound-complex.”

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