No bread eaten by man is so sweet as earned by his own labour.AoneB. thoseC. itD. that

问题补充：

No bread eaten by man is so sweet as earned by his own labour.

Aone

B. those

C. it

D. that

答案：

A. one

B. those

C. it

(答案→)D. that

解析：that指代前面的 bread，避免重复。