结合本题所设置的情景，在每个空白处填入适当的内容完成下列对话。

A: Jeff, let's take a walk around the lake tomorrow, OK?

B: Sounds like fun. ?

A: It'll be sunny. Jeff, ?

B: Yes, Dad. I finished my homework a few minutes ago.

A: But what are you doing now?

B: . I just want to relax myself.

A: Is that also your homework?

B: Not really. But the video is well worth watching. It's about the Novel Coronavirus. ?

A: Yes, I've just heard something about it. Anyway, it may be a little bit hard for you to understand.

B: A little bit hard? You must be joking. In the video, the conversation between the host and the expert makes the topic clear.

A: It does? Can I watch it with you?

B: . Let's learn more about the 2019-nCoV pneumonia and follow their safety suggestions.