3. Nuntiabunt is the third-person plural future indicative (they will tell) of nuntio (I tell).
7. She will love is the future tense.
8. He is loving is the present tense. It is actually a special type of present tense called present progressive, which serves to distinguish "he is loving" from "he loves."
10. vocabat is the third-person plural imperfect indicative of voco (I call). She called is the best translation of the options given, but I would say "she was calling" is more accurate. This is because imperfect has the implication of a continuous or uncompleted action that happened in the past, and "called" does not have this meaning in English. However, as I said, "she called" is the best option of those given.
I hope I was helpful!