请帮我选择并解释：It's nine O'clock and it's time you___to bed.A.went B.were C.have been D.had been

请帮我选择并解释：It's nine O'clock and it's time you___to bed.A.went B.were C.have been D.had been It's nine o' clock.(对nine提问） it's nine o'clock翻译? It’s nine o’clock .It's time_______to bad.(填空) There are ______ books in our school library.A．nine thousand B．nine thousands C．nine thousand o 请大家帮我看下, in London/most people/about nine o clock/start work请帮我组成一句 请帮我翻译D.NINE 英语翻译It's nine o‘clock.（对nine o’clock提问）--- the ---? It‘ s nine o’ clock.问句怎么写 It 's nine o 'clock in Beijig.变成一般疑问句? It's d___ at nine o'clock in the evening. it's nine o'clock.we're late () the party It's d___ ait nine o'clock in the evening. it's nine o'clock and they ( ) classes What ________ four and five?______ nine.A.are,They are B.is,It’s C.is,Its D.are,It’s请选择 请帮我解答下面这段英语的意思,尤其是括号内的名型的解释,IT IS lucky for the nine justices of America’s Supreme Court that （they need not seek re-election）.In the last days of their（ latest term） they were denounced f It is nine o clock . It's nine o'clock.It's time _______English class.为什么要填for进去?