如 At 7 o"clock YESTERDAY evening i heard him _____ (唱歌） in the next room 此题答案为什么是singing 如果是过去进行时的话那不应该是 was singing

at 7o'clock是什么意思? at six o'clock可以省略成at 如题. 12o'clock at She goes to school at 7 o'clock every day.对at 7 o'clock提问 School at nine o’clock Lucy .at eight o’clock. at _____ twelve o’clock 谁能用英语写一下作息时间表,如I get up at seven o'clock.不少于7句 I leave shool at 7 oclock中文是什么意思? he get up at 7 o'clock改错! They were doing their homework at 7o'clock yesterday evening.对at 7o'clock yesterday evening提问 at...o'clock 和 by...o'clock 辨析. By 8 o'clock ,at 8o'clock 和on 8o'clock什么区别 根据首字母完成单词.Are you （s_） to school at 7 o'clock or 8 o;clock? i need to be at the airport by 6.00 o'clock翻译如题 谢谢了 begin在主语为三单时要加S吗?如 The school begin(s) at eight o'clock . Look at the clock._______is nine o'clock. School starts at nine o'clock.