Liu Tao is _________ younger than his twin brother Liu Xiang.A. 15 minutes B. 15 years C. 15 days
绿色 A. redB. blue C.green
向下 A.upB. downC. stand
健康的 A. good B.fineC. thank
别人主动向你说How are you ?时,你应当说: A.Thank you. B.I’m fine, thank you.
回答完问题后,老师让东东坐下,他可以这样说: A.Please stand up ! B.Please sit down .