TOEFL Listening: TPO-TOEFL阅读TPO - 44MK994HUZF4D945N$

Look at the four squares [] that indicate where the following sentence can be added to the passage. A. In fact, artifacts and pottery from Teotihuacán have been discovered in sites as far away as the Mayan lowlands, the Guatemalan highlands, northern Mexico, and the Gulf Coast of Mexico.