来自李兆杰的问题
【Weallknowthatmanykidslikesweetfoodbetterthansaltyfood．（保持句意基本不变）Weallknowthatmanykids___sweetfood___saltyfood．】
Weallknowthatmanykidslikesweetfoodbetterthansaltyfood．（保持句意基本不变）
Weallknowthatmanykids___sweetfood___saltyfood．
