Gnt quanto que é 2,7 ?? Me ajudem pfv

1-The cat was running very fast.
2- The teacher was understanding you.
3- The dog was trying to take the bone. (se com trus tu quis fizer try. )
4 não entendi.
5-Was he going with you?
6- You were not understanding him.
7 Bob and I were working in the school.
8- we were studying in afternoon

a)-4

b)-12

c)+11

d)-7

e)+7

Por favor, releia as sentenças e as corrija. Aí poderei ajudá-la.