三个有理数abc的积是负数，其和为正数

1.The little girl is too frightened ________ a word.用to say 还是用 to tell -l have bought an english_chinese dictingary -When and where__you__it B:did buy D:have bought允许写的字太少了,就排除了两个,然后不知道哪一个对,A：do buy C:had bought The little girl was too frightened a word A not to tell B not to say C to tell D to say The lawer listened with full attention,（）to miss any point.A.not trying B.trying not C.to try notD.not to try要说明原因 用长江为内容,写一个比喻句.到期时间（2010年12月27日—2010年11月28日 That your is English book 这几个单词怎样拼成一句话? way,good,is,that,a(.) out,book,your,take,English(?) big,banana,a,there,a(.) 英语翻译The very low soil moisture content of the trampling routes drives a causal chain of lowherbaceous production,litter production and soil organic carbon content,and greater soil bulk density.The combined effect of these processes is expecte The teacher told the girl not to worry改句 The teacher told the girl not to__ __ __ My parents wasn't very happy with my exam results The teacher told the girl to come in but want toShe didn't ate her breakfast this morning.Where did you bought these jeans?改错My parents wasn't very happy with my exam results The teacher told the do you have the new chinese-english dictionary?-yes,but no more than one copy.would you like to take? the teacher told (to)the children 要加to吗 This is a shirt .改为复数句 This shirt is small for him (改为复数意义的句子） this、shirt的复数是什么 蝴蝶的英文名是什么我想用百度搜索到就是那个A YI YA YI YA 节奏的英文劲歌 that isn't your book,yours is here.这句话中的your yours有什么区别? 一些表示冷酷的女生的英文名,最好带有花或蝴蝶不然我看不懂 选词填空 This isn' my book.That is ____ book.（my,your,his,her,its,their） 蝴蝶夫人当中最经典的是哪首歌 英文名字是什么 英语中宾语从句的句型 The teacher is listened (to) the student carefully.这个有关listen 的被动要不要to啊? How_______ students listened to the teacher A.carefully B.careless C.care D.careful The students were listening to the teacher,with their eyes______.A.widely B.wide opened C.widely opened D.wide open为什么是D.A,B,C,D,有什么区别啊 急搞错了A是widely open 老师说A要改成widely opening才对，为什么？ 英语的各种句式,比如：宾语从句 等 After reading the book,our teacher (c )to write some inportant points on the blackboard we were told to have our reading room()after school.A.clean B.to clean C.cleaning D.cleaned The students do some reading after class.改一般疑问句,the students do some realing afterclass?为什么some要不改为any?是不是因为do some reading是一个词组,不用改的原因? After that,my father will begin to enjoy some music,leaving us to do our homework by ourseleves. Many ______________ten Yuan buying the story book 为什么要用spent I spent 100 yuan buying the souvenirs.(同义句)The c___ / f____ of the souvenirs _____ 100 yuan I spent 15 yuan on a book.(改为同义句） I____ 15 yuan____ the book.