【题目】Believe it or not, no bread eaten by us is so sweet as________earned by our own labour.
A.one
B.that
C.ones
D.those

【答案】B
【解析】句意：信不信由你，没有任何面包能比得上我们亲自劳动挣来的(果实)吃起来甜。that＝the＋不可数名词，相当于the bread。