Respuesta :

Tomar is the missing word
The full sentence Tú tomar el sol en la playa in English is You’re sunbathing on the beach

Answer:

the answer is:  tu tomas el sol en la playa.

Explanation:

if you said "tu tomar el sol en la playa" you would sound like a caveman, so . . . . . . . . . . . . . . . . y e s . . . don't do that :)