Read and finish.（阅读上下文，补全对话）

John: Oh! School is over. 1._______

Wu: OK…But 2._______ now?

John: 3.______

Wu: Oh, It's time to go home.

John: Just a minute.

(They play together on theplayground.)

Wu: It's six twenty. 4.______.

John &Wu: Let's run!

A. what time is it

B. It's time for dinner.

C. Let's go to the playground.

D. It's 5:30.

治安行政管理是国家其他行政管理得以正常实施，并取得社会效益的有力保障。( )