Youmayusebike________yougiveitbacktometomorrowmorning
A、unlessB
暂无解析
Robots,___(become)increasinglyprevalentinfactoriesandindustrialplantsthroughoutthedevelopedworld,areprogrammedandengineeredtoperformindustrialtaskswithouthumanintervention.
Let ’s personal feelings in making judgment.（）
Forthoseinvolved,thescandalhasbeenavery________(pain)experience
Thepresentcrisisbearssome________(similar)totheoilerisisofthe1970s
Experts have found that normal sleep can be divided into five______stages
