Question

translate to smile into spanish by filling in the missing letters: _on____

Explanation:

To translate "to smile" (the infinitive form) into Spanish, we recall that the Spanish infinitive for "to smile" is "sonreír". Looking at the given format "_on____", we fill in the missing letters. The first blank is "s", then after "on" we have "reír", so the full word is "sonreír".

Answer:

sonreír (filling the blanks as s on reír, so the complete word is sonreír)