根据句意，补全对话，每空一词。

A: Good morning.

B: Good morning. What are you 1_____________ now?

A: I'm 2_____________.

B: Running? What's 3_____________ with your bike?

A: It's 4_____________. Could you mend it?

B: Yes, I can. But now let's 5_____________ games.

A: OK. What 6_____________ a Frisbee (飞盘)?

B: Good. Can you 7_____________ it?

A: Yes, I can. Throw it 8_____________ this.

B: No, you are 9_____________. Do it like this.

A: I know. It's very 10_____________.

在洞室开挖的围岩类型中，Ⅳ类围岩的特点是（）。

A.围岩不能自稳，变形破坏严重

B.围岩自稳时间很短，规模较大的各种变形和破坏都可能发生

C.围岩整体稳定，不会产生塑性变形，局部可能产生掉块

D.围岩总评分T：45≥T>25，围岩强度应力比S：S>2

E.支护类型为喷混凝土、系统锚杆加钢筋网，并浇筑混凝土衬砌