Answer:
First horizontally line: Es - As - Gardes - Répares
Second: Sont - Ont - Gardent - Réparent
Third: Sommes - Avons - Gardons - Réparons
Final one: Suis - Ai - Garde - Répare
Explanation:
I suppose that you have to conjugate it in present tense.
Tu = You
Ils = They
Nous = We
Je/J = I
Être = Be
Avoir = Have
Garder = To keep
Réparer = To fix