We must be back at the school by seven o,clock .We _______be

we go to school at seven o'clock every.at seven o'clock 提问 They must _____(be)at school by eight o'clock we must be home by four o'clock是什么意思? 同义句转换1.We must arrive at the zoo at seven o'clock（写出两个同义句）2. We must ( )to school at seven thirty. We can have dinner at seven o' clock ,at seven o' clock 划线,针 We usually have supper at seven o’clock汉语 把by must home o,clock we four be连词成句 be,must,by,home,we,6 o'clock(.)怎样连词成句? The children must be back at ten o‘clock（变否定句） 英语翻译1.We needed to be at the airport by 6:00 o’clock .2.I’m we will be back/ in / six o'clock.可是答案是at