分类：教育/科学-外语学习
问题：请问怎么选择?WHY？谢谢！pass的过去是PASSED还是PA? 
18.    The fox watch them _____ from the safety of a nearby field.  A. going passed  B. to go pass  C. going past  D. to go past
回答： C. going past 狐狸看着他们走过
watch+名+doing看...做...
past是副词:过
pass的过去式是passed