great! ls this the library?是什么意思我有急事,快!

great! ls this the library?是什么意思我有急事,快! ls this the ls / ls-l / 的区分 ls this the playground?改成肯定句怎么改 ls peter going to the supermarket this weekend是什么意思 This is the Great Wall. 英语ls this your ls this your ls this your school? ()25.ls this ___________ English book?A.a B.l C.your D.you 是 ls this the factory which he worked ten years ago.还是 ls this the factory where he worked ten years ago. ls-l/ 和ls-l分别都是什么意思 ls this ( ) english book?( )中填啥? ls this a picture是什么意思 ls++this++your++school是什么意思 ls this new calculator _____? ls this...for...怎么填 centos6.5下 ls -l