高一英语小疑问1They clean and decorate their houses in ______(prepare)for the New Year.为什么空里填的是preparation而不是preparing啊?

高一英语小疑问1They clean and decorate their houses in ______(prepare)for the New Year.为什么空里填的是preparation而不是preparing啊? 高一英语题.解答下疑问.8. They said at last that they _______ better start out at once. A. had had B. had C. had been D. was 我选的是C,答案是B,为什么呢? 高一英语小疑问!The club _____a bigger room for their meetings.A.needs B.need c.is needing D.have needed 为什么不能选A而是要选B啊? 高一英语24He had the house painted blue when they moved in ,（ A did he B had they C didn‘t they D hadn’t they 关于数学高一的集合小疑问若集合A={-1,1},B={0,2},则集合{z|z=x+y,x属于A,y属于B}中的元素个数是?我有个疑问哦~就是x属于A ,y属于B这里是不是指x=-1, 英语中疑问副词疑问代词在各句式中做什么成分?关于高一的知识 英语中的代词疑问They live a happier life than they did before .这里的did是什么意思 Example:his shoes (dirty) clean Are his shoes dirty or clean?They're not dirty They're clean 做一1 the children (tired) thirsty2 grandmother and grandfather( young )old3 their hats (old) new 高一的英语情态动词的用法包括疑问和回答方式及注意事项 高一水平英语小作文,自我介绍 高一英语第2小题 They can clean the bedroom英语对划线部分提问clean the bedroom是划线部分 英语改成过去时的肯定/否定/一般疑问/特殊疑问l am a he is They play the piano he watches tv 高一英语小疑问2A dog ______(starve) at his master's gate predicts the ruin of the state.为什么空里填的是starving啊?是伴随状语吗?还是动名词作主语……?是starve,不是stare啊! 高一数学课本中的思考题,有点疑问:(1)A∪∅=A吗（2）A∩∅=∅吗 能说明原 高一英语单选.看一下第一小题,请问,不选a,为什么? how dirty the tables are ,they need ---------A to clean B clean C cleaning D cleaned 高一英语小疑问3It's dangerous if you have the fire _____(burn) all night long为什么空里填的是burning?是伴随状语吗?现在分词作伴随状语是什么情况出现的?