.Many boys in our class often do their homework very () .Amuch careful Bcareful Ccarefully

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• .Many boys in our class often do their homework very () .Amuch careful Bcareful Ccarefully
• 初一下册英语习题.呃…分少了点,请见谅~好的话我还是会加分的!1用所给词的适当形式填空.My son has a lot of _______ (toy).He likes them very much.Tina often goes _________(shop) with your parents.Thank you for ________ (tell) me the news.There are many interesting _________ (activity) after school.This ides sounds __________(well)Do you want to go to the ________ (movie)Let's ________ (begin) our class.Look!These boys are ________(swim) in the river.They __________(not play) games now.The kids
• 帮忙看一下这篇英语作文写得有没有不对的地方?Many studets get tired because they have to do too much homework.And thet have no time too do exercise,so ,they can't get good grades,and they are not strong.I think it is very important to stay healthy,it depends on how often you do exercise.Our school has many kinds of sports like basketball,volleyball and soccer.We often play sports in school.We can exercise in P.E class.I think it is good for our health.It helps me too keep h
• Tom h----- sleeps in class,so he often get good grades1.Tom h____ sleeps in class,so he often gets good grades.2.My brother`s w____habits are not good.3.They often do homework at school,but s____ they do it at home.4.Do you know the r____ of our exam last week?5.There are many d____between city and country.6.They go home t____ a year.7.As f____English,it`s my favorits.8.A____he is poor,he is very happy.9.She tries to e____a lot of vegttables and fruit
• Many boys in our class often do their homework very careful.改出错误
• 含有少量氯化钠杂质的碳酸钠样品12克与50克稀盐酸刚好完全反应,得到溶液质量为57.6克,求（1）样品中碳酸钠的质量分数：（2）稀盐酸中溶质的质量分数：（3）反应后所得溶液的质量分数.
• 先化简，再求值：x−4x−2+4/x2−4x+4÷x/x−2，其中x=2sin45°．