液液萃取的原理

Let's go to the park.-Great!But I need a bike.中的tneed在本句中是什么意思?还有几局也要各位帮忙:The car can;t move.Beca the wheel is broken.中的wheel是什么意思My mother is a worker and my father is a cleaner.中的cleaner Let's go to the park.Greet!But Ineed a bike. We __(be) free now.Let's ___(go) to the park.Great!I want to go to__(fish).用动词适当形式填空, 有 for three else hours么 In order to earn more money for his new car,the young man has to work for three ______ hours in the evening.A、extra B.else 为什么B不可以? Nancy ____ _____ _____for three hours.Nancy started to study three hours ago. 三个小时的火车,用three-hour train.还可以怎么表达?可以说three hours' train吗?我看到有些答案是three和hour之间没有“-”的,那怎么表达?是否可以three hours' train? how do some deal with 和why do some deal with 意思一样吗 There are _______ hours left.A.half B.two halves C.half an D.two and a half 选d请说明原因英语题 The fish(has been dead)for two hours and a half.为什么不用has died? It's three minutes' walk 应该用什么提问?用什么提问啊?是用How far I spent three hours swimming in the river.为什么用spent?急 three minutes' walk=three-minute walk对吗?three前是否有a Don't worry.The train is_____(come) in three minutes. How long have the students been playing basketball? A tow and a half hours B tow hours and a half Ctwo and a half hour C Both A and B You are a great student.与You have been a great student.的区别 l have been a student here （for a year）.(划线部分提问） 根据首写字母填空after three hours 'walk .all the students are too (e )to walk further she was very tired after walking for three hours.中为什么用walking? If rhree cats can kill three rats in three的中文但是 大苏打这程子系陈独秀使性子按时子防白暖和吧民间内 If rhree cats can kill three rats in three days ,how many cats kill ten rats in ten days? If three cats can kill three mice in three days,how many cats can kill 100 days?WHY? Once a weak,I went to see my grandpa.（就划线部分提问）once a week划线 He has been here for __.A.two and a half monthsB.two and half a monthC.two and half monthsD.two and a half month为什么选A呢? How long will you stay here A.two and a half month B.two and a half months C.two months and half请附带A、B、C三个选项的注解, 人类 humans还是human好混乱 You should remember ______ your umbrella to school tomorrow.A.to take B.taking C.to bring D.bringing REMEMBER TO DO WHAT U SHOULD DO什么意识啊 When you go to a new place,you should remember the ____ (direct).用所给单词的正确形式填空. if you go to a new place ,you should remember the (方向）用direction还是directions,为什么 I‘m reading English ____my brother is listening to music I'm listening to the music____my sister is playing with the cat A when B while C but D or 英语翻译我姓周的