Complete the text. Use the present perfect with just, already and yet. (go x2 | not go | learn | start)

My grandma is really cool. She's just got back from South America - she was travelling around.
She's three times before and she loves it there. She's to Chile, Brazil and Peru but she to Mexico . I asked her, you any Spanish, ? She said, "I night classes!"

Astudent is writing a conclusion for a research based informative essay on the possibility of exploring and inhabiting mars. what should he include in his conclusion. select two options

However, the idea of real-life people living in what would become the united states for thousands of years before columbus ever left spain never dawned on me. what would be the best way to revise this sentence for greater clarity? a) however, the fact that columbus left spain thousands of years after people settled what would become the united states never dawned on me. b) it never dawned on me, however, the idea of real-life people living in what would become the united states for thousands of years before columbus ever left spain. c) however, the fact that people were already living in what would become the united states for thousands of years before columbus ever left spain never dawned on me. d) however, the idea never dawned on me that long before columbus ever left spain, real-life people lived for thousands of years in what would become the united states.

What’s the difference between extract and abstract as nouns and verbs?