Classes are over at 4:00 是对划线部分提问的题目划线部分是at 4：00.是What time are classes over 吗?are前面有两个空啊...用when好像不对哎

Our classes are over at 4:30 in the (a ). Classes over和Classes are over的区别Classes ___ at 4 o' clock.A.overB.is overC.are over选哪个呢? Classes begin at 8:00.为什么要用begin 下文说 Classes are over at four.为什么不可以说 Classes are begin at 8:00呢？ Classes are over at four in the afternoon改为同义句Classes____at four in the afternoon. at,thirty,are,classes,four,and,home,I,over,get,about,four怎么连成一句话? Classes are over at four in the afternoon.改为同义句 aftenoon,the,5:00,in,classes,are,at,over,our 连词成句（急!） the classes are over是什么意思?谢谢 All my classes are over at 2 P.M.的同义句等于 All my classes 空 at 2 空 空 Classes are over at 4:00 是对划线部分提问的题目划线部分是at 4：00.是What time are classes over 吗?are前面有两个空啊...用when好像不对哎 Classes are over.The students are 什么 the classroom Classes are 什么at四点半 Classes a____ over at four twenty-five.首字母填空 classes are 它和Class is over有什么 区别 有谁知道Classes are over的同义句是什么? They begin classes at two o'clock and classes a_____ over four twenty-five.填什么 i study at a primary school in a village in northern Jiangsu Province.There are over(为什么不用为什么不用only）six classes in my school. Jenny gets up early at about 6:30 .she has breakfast and then goes to school at 7:15.she gets to school at 7:45 .Classes begin at 8:00.Lunch is at 12:00 .Classes are over at 4:00 in the afternoon.she gets home at 5:00.she goes to bed early at 9:00 in