You shouldn’t keep a pet you have enough time to care for it. A. ifB. unlessC. thoughD. w

问题补充：

You shouldn’t keep a pet you have enough time to care for it.

A. if

B. unless

C. though

D. when

答案：

A. if

(答案→)B. unless

C. though

D. when

解析：

试题分析: 句意：你不应该养宠物，除非你有足够时间照顾它。 if如果，unless除非，though尽管，when当……时。养宠物的先决条件是有足够的时间照顾它，故选B