You should keep working hard you have passed the exam.A. ifB. becauseC. even thoughD. when

问题补充：

You should keep working hard you have passed the exam.

A. if

B. because

C. even though

D. when

答案：

A. if

B. because

(答案→)C. even though

D. when

解析：if如果；because 因为； even though虽然，即使；when当……时候。句意：即使你已经通过了考试，你也应该努力学习。故选C。