物体振动的频率跟音调的关系是

Two friends live in a house He kept ( )to his old friends to ask for help. there is a bus on the right side of the road 改一般疑问句 walk on the grass.改成否定句怎么改?there is a park in our city.改为一般疑问句怎么改?对by bus这句英语进行提问,i often watch socer matches去掉often改成现在进行时.It'sunny,and it's hot there的汉意,3Q! I went to a bookshop (to buy an English book)yesterday.如何对（）部分提问? there are l____dances and fireworks near my home. ____怎么填? He went to school hurriedly .=He went to school ____ ____ ____.=He ____ ____ school. I went to a toy shop yesterday. 紧急!求作文.明天的绿色生活--我的梦想,我的创意!（5选1）给出5个作文题目,从中选取一个来写.1.飞过草原的梦想2.我的家乡和我的爱 3.珍藏在心(推荐)4.当歌声响起的时候(推荐)5.明天的绿色 连词成句【用这些词连成一个句子】talk to,information,Peter,more,for,please 连词到底是接句子还是接词?那like和as有什么区别？(表示“像"时) 阿波罗登月到底是真的还是假的?好困惑的 阿波罗登月是真的还是假的? （ ）___ it was very cold ,——— he went out without a coat.选项为:A.Though;but B.Although;but C.Though ;不填 D.But;though(请说明理由） You ____ out yesterday without a coat. No wonder you caught cold.A.shouldn't have gone B.mustn't have goneC.couldn't have gone D.needn't have gone __ it was so cold, he went out without his coat. A Although B If C When D Because 为什么?__ it was so cold, he went out without his coat.A Although B If C When D Because 为什么? 连词成句,可添加适当的词连成句子 Though it was very cold ,he went out without an overcoat .是什么句子结构 I went to the toy shop.变为一般疑问句 A:Hi,Linda!1_______.B:Yes,there is a bookstore near here.A:2_______.B:it's on the left of thecinema.A:3_______.B:it's two kilometers way from here.A:4________.B;You can ride a bike here.A;Oh,I can't.B;why?A;There is something wrong with my bike.B;Don are there_____? yes,there are.有图，好多只鸡，在农场里 racing computer game的文章介绍它与一些现实中年轻人飙车的情况 computer games和computer game的区别. 明天的绿色生活,作文怎么写 it is just over therejust是副词修饰is? The bank is just over there.为什么可以加介词?The bank is just over there.这句话there前为什么可以加介词?照例there是地点副词,前面不应该加介词的不是吗? What is the bus station?It's over there.改错 I slept with the window open 为什么用OPEN为什么不用 opening 或opend The room () window is small,is mine The man () son is smart ,is my friend为什么两个孔都填which? ,with the window open这里的open为什么要用原型,宾语补足语不是都是现在分词,过去分词之类的吗? 毕竟过去了,我永远祝福你 求翻译成英文 The room of _____ the window faces south is mine