Final answer:
You can split the sentence into two by adding a full stop after 'The Cherry Drips are the best band.' This results in two sentences: 'The Cherry Drips are the best band. I’ve seen them live three times.'
Step-by-step explanation:
To add a full stop to make 2 sentences out of the sentence 'The Cherry Drips are the best band I’ve seen them live three times,' you would need to identify the two main clauses within the sentence. By adding a full stop after the phrase 'The Cherry Drips are the best band,' you separate the second clause that starts with 'I’ve seen them live three times.' Thus, the two sentences would be
The Cherry Drips are the best band.
I’ve seen them live three times.
This separates the statements into individual sentences, each with a subject and a verb, resulting in a clearer understanding of the two thoughts being conveyed.