We should never till tomorrow what we can do today.A. put onB. put offC. give upD. give ba

问题补充：

We should never till tomorrow what we can do today.

A. put on

B. put off

C. give up

D. give back

答案：

A. put on

(答案→)B. put off

C. give up

D. give back

解析：根据单词和词组的不同意思，put on,表示穿上的意思，put off 表示推迟的意思，give up ，表示放弃的意思，give back，还回来的意思，故选B。