补全对话，根据语境，填入适当的词语或句子。

A: Can I ask you some questions?

B: Sure.

A: What's your name?

B: My l. _____ is Jack.

A: 2. _____ are you in?

B: I'm in Class one Grade Seven.

A: 3. _____

B: Yes, I can dance very well.

A: What's your 4. _____?

B: It's running. I like running best.

A: Do you want to 5. _____ the sports club?

B: Yes. I do.

A: Thank you very much.

B: You arc welcome.

以下哪项是可摘义齿固位体中直接固位体的作用（）

A.防止义齿向龈舌向脱位

B.防止义齿向龈方脱位

C.防止义齿向龈颊向脱位

D.防止义齿向牙合方脱位

E.防止义齿向龈颊舌向脱位