How is life yall :) ;)

In this sentence should the 'de' be 'du'? "non, je ne fais pas de sport."

Fill in the blank with the french word that best completes the following sentence. il faut __ de francais en anglais. a. perdre b. traduire c. sourire d. venir

I'm doing a presentation about the oxygen atom, i'm right now explaining what the nucleus i've searched the web for ideas but nothing shows up. what does the nucleus do in an oxygen atom? !