pencil-case和pencil-box有什么不同?schoolbag和 bag又有什么不同?

pencil case怎么读 pencil case怎么读 pencil-case 中文 my pencil-case pencil case 汉语意思 pencil-case的中文 pencil case的中文 the pencil case is( ). pencil box等于pencil case吗 my pencil is ____ my pencil case pencil 词汇归类pencil sister ruler eraser brother mother pencil case uncle pencil sharpener auntA.家庭成员B文具 pencil-case和pencil-box有什么不同?schoolbag和 bag又有什么不同? No,（） pencil is in the pencil case.A I B my C his D me That's anA old English book B English old bookCnice pencil caseD pencil case ____ your pencil in the pencil case?a.Is b.Are c.Do d.Does 是pencil case,还是pencil-case?铅笔盒（pencil?case）这个单词“l”和“c”之间是空格符号还是连词符号,请说明理由,thank you了. pencil case 中间需要加横线吗?是pencil-case?