托福语法题The upper part in a harmonic arrangement ____ by mixed voices is usually written for a soprano voice.A.to be sungB.as singingC.to be singingD.was sung这道题为什么选A?没懂,我选的B,为什么不对?考的什么语法点?

托福语法题The upper part in a harmonic arrangement ____ by mixed voices is usually written for a soprano voice.A.to be sungB.as singingC.to be singingD.was sung这道题为什么选A?没懂,我选的B,为什么不对?考的什么语法点? Could somebody explain me what is the meaning of the upper part?求翻译 A is the Rep. of General Supervisor of XXX Bridge Upper Part.怎么翻译? Held the upper hand 老托福Part c 听力如题,老托福part 3 和老托福part c 听力是一样的东西吗? upper upper upper upper upper the upper chamber的意思 请问lap是指膝盖还是大腿呀,字典里写the upper part of your legs when you are sitting down 这句话麻烦英文翻译成中文The name derives from the fact that the bold upper part of the frames frame the lenses in the same way that eyebrows frame the eyes. gain the upper hand over意思 THE GRAPES OF WRATH UPPER LEVEL怎么样 在准备GMAT,语法SC题GWD4-Q2 不太懂,求指教.In Greek theology the supreme being was Esaugetu Emissee (Master of Breath),who dwelt in an upper realm in which the sky was the floor,and who had the power to give and to take away the breath of l Students have to take part in the exam held by the city有什么语法 求老托福的听力.语法题什么都要.