HespendseverySaturdaymorning      inananimalhospital. A...

问题详情：

He spends every Saturday morning       in an animal hospital. 

A work        B. worked           C. to working  D. in working

【回答】

D sb．spends／spent／will spend some time(in)doing sth．某人花费时间做某事。

知识点：动词和动词短语

题型：选择题