Yo hablo con la cuando yo necesito una habitación en el hotel.

Recepcionista is a feminine singular noun. Recall that a noun is a word or group of words that is the name of a person, a place, a thing, or activity or a quality or idea. Since this is a feminine singular noun, then the matching definite article is la, which is feminine singular, too, as indicated in the sentence. On the other hand, recepcionista means receptionist. Finally:

Yo hablo con la recepcionista cuando yo necesito una habitación en el hotel.

answer: the answer is saben

ancient india is often called the harappan civilization because one of the ancient cities was called harappa. harappa was just one of 1500 cities in the indus river valley. another well-known city is called mohenjo-daro. historians estimate ancient india to be the biggest of all four early civilizations.