Answer:
The sentence that we must complete is:
"Quien _________ dos lenguas vale por dos."
A rough translation of this is:
"Who ____ two languajes, is worth for two"
The word that can complete the sentence is "speak" or "habla" in Spanish, the complete sentence is:
Quien habla dos lenguas vale por dos.
I don’t understand what you’re asking! But when referring to weather you could say things like “hace buen tiempo”