A: Hello, Lucy.____ Is this your book?

B: No, it's not mine. Where did you find it?

A: Under the bench in the gym(体育馆).

B: When did you find it?

A:____

B: Oh,____ Because Class Two had a lesson in the gym just now.

A: Let's ask the teacher of Class Two.____

B: I'm sorry I can't go with you. I must practice the piano right away.

A:____ I will go alone. See you.

B : See you.

读古诗《村居》，回答问题。

《村居》的作者是____朝后期的诗人____，诗的前两句是____，____。

***答中外记者问时指出，公正是提高人民满意度的一杆秤……要不断地清理有碍社会公正的规则，而且要使明规则战胜潜规则。这段话表明了（ ）

①保证最大多数人民的利益，需要遵循公平的原则

②制度的正义在于它保障全体社会成员的利益

③正义的制度规则是社会生活的绝对权威

④正义的制度是建立在所有社会成员的共同利益基础上

我国的民族个数是（　　）