根据情景内容，在空白处填入合适的单词。
A:(1)__________ you keep in touch with Bill Black? It’s been years since I heard from him.
B:(2)_________, I do. He has been a very close friend of mine. If I remember correctly you went to the same college as he did, right?
A:That’s(3)__________. I would really enjoy seeing him again.
B:(4)__________ sure he would be interested to see you. I’ll arrange a dinner so we can all get together.
A:Good (5)__________.