急,一道英语小题Mary is going to China ____vacation.这个横线上为什么不能填on?on

急,一道英语小题Mary is going to China ____vacation.这个横线上为什么不能填on?on I'll go to England ____vacation.(填for还是on) Mary is going to park on Sunday.(改为一般疑问句) He is going to China和He is going on to China有什么区别? I‘m Xiaoyong.I'm-------China.请问横线上填什么合适?in on at to by for f There ___ some food on the desk.为什么横线上填is而不是are? there ---- lots of food on the table.横线上是is还是are.为什么有填is有填ar earth is the place which you live on 为什么有一道题不能加on There is a sheep on the hill.改成复数 Mary is going to draw pict Let's _____ on Saturday morning.横线上填climb、go climb还是going cl Mary is d——a picture中间横线上填什么? 急! We_________have math class on Tuesday. 请问横线上该填什么单词? 急!乱写会被英语