a cup of coffee中间为什么要加of呢,不加不可以吗

a cup of coffee中间为什么要加of呢,不加不可以吗 a cup of coffee He dropped the ____and broke it .A.cup of coffee B coffee's cup C cup for coffee Dcoffee cup 其他为什么不对 Let us drink a cup of coffee.为什么用drink 为什么外国用a cup of coffee而不用a glass of coffee呢? he dropped the___and broke ita cup of coffeeb coffee`s cupc cup for coffee d coffee cup 这题选a为什么呢 ,我觉得选B也行 Two ____, please. A. coffee B. coffees C. cup of coffee D. cups coffee选什么 为什么 谢谢! she s___ me a cup of coffee How about a cup of coffee? What about_(have)a cup of coffee? a cup of coffee 是什么短语 is tom drink a cup of coffee? A cup of coffee?作否定回答 Have a cup of coffee,please应答 grab a cup of coffee是什么意思 cup of coffee 歌词 Rose would like a cup of coffee.对a cup of coffee提问 Does he want to have a cup of coffee?(同义句) _he_a cup of coffee?