Final answer:
The correct word to complete the sentence is 'Son'. It is used to tell time in Spanish and indicates the minutes past the hour.
Step-by-step explanation:
The correct word to complete the sentence is Son.
By adding the word 'Son' after 'las dos y veinte', the sentence is translated as 'It is twenty past two' or 'Two twenty'.
This phrase is used to tell time in Spanish, with 'Son' indicating the time is 'is' or 'it is' followed by the number of minutes past the hour.
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