You __________ put your computer in your bedroom.
You should try to write __________ eve n when you ’ re busy. As you know, practice makes perfect.
_____ girl in white is _____ friend of mine. And we are also classmates.
我国对从事货物或技术进出口的对外贸易经营者资格管理实行的是______
电子商务企业的结构越来越趋向于（）
