The sentence says "I ___ to the physical education class."
Your options come from the verbs "ir" (voy and vas) and "tener" (tiene and tengo) which mean "to go" and "to have" respectively.
In this sentence, go (ir) would make more sense so they answer will either be voy or vas.
Voy is conjugated for the "yo" (I) form and vas is the "tu" (you) form. The subject of the sentence is I so the answer is voy.
Hope this helps!!
