Life in college is colorful. However, there is a _______ that annoys me most- more and more college studentsare_________online games. Thosegames may befun and _______, but are veryharmfulto those _______.

O2O的定义是? Online To Offline|offline to Online to offline|Online to offline to online|offline to online

O2O的定义是 A: offline to online B: Online To Offline C: offline to Online to offline D: Online to offline to online

O2O的形式有 A: Online to offline B: offline to online C: offline to Online to offline D: Online to offline to online

020是( )的缩写。 A: online to online B: offline to online C: offline to offline D: online to offline

What does O2O mean? A: One to One B: Offline to Online C: Online to Offline D: Online to Online

O2O是（ ）的英文缩写。 A: Online to Online B: Offline to Online C: Online to Offline D: Offline to Offline

O2O是( )的缩写(2.0) A: online to online B: online to offline C: offline to offline D: offline to online

移动O2O营销模式包括（ ）？ A: Online To Offline To Online模式 B: Offline To Online To Offline模式 C: Offline To Online模式 D: Online To Offline模式

O2O指的是（ ）。 A: Online To Offline B: Online To Offline C: Offline To Online D: Offline To Offline