请帮我选择并解释：It's nine O'clock and it's time you___to bed.

请帮我选择并解释：It's nine O'clock and it's time you___to bed. it's nine o'clock.it's time bed（填空） it's nine o'clock and they ( ) classes it's nine o'clock翻译? It's nine o'clock.It's time _______English class.为什么要填for进去? It’s nine o’clock .It's time_______to bad.(填空) It's ten o'clock in the evening It's time 什么 bed It's nine o' clock.(对"nine"提问） 根据短文选择答案 It's nine o'clock in the evening.The family are at It's nine at night.It's time to go to bed.it's the（） It‘ s nine o’ clock.问句怎么写 it's nine o'clock.we're late () the party