Just follow the model of the first question.
Notice that just was in the parenthesis so it was in the first answer, but it is not in questions two and three.
Yes I (have) (talk) with her before.
Have + kakobunshi = present perfect
He (have) (live) there since ....
Remember to use the right (have or has) with each one. Use the right kakobushi as well.
She went to the gym.
She (have) (go) to the gym.
My grandmother (have) never (use) a smart phone before.
Does this help without giving you the answers?
ありがとうございます！