We give dogs time space and love we can spare and dogs give us their all.A. in allB. i

问题补充：

We give dogs time, space and love we can spare, and , dogs give us their all.

A. in all

B. in fact

C. in short

D. in return

答案：

A. in all

B. in fact

C. in short

(答案→)D. in return

解析：in all合计 in fact事实上 in short简而言之 in return 作为回报。结合句意：我们总是抽出时间、腾出空间、腾出爱来给狗，而狗回报我们的却是它们的全部。故选D