________ the job takes a significant amount of time, most students agree that the experience is worth it.
A：If only
B：After
C：Although
D：In case
①意识内容的变化本质上是人的反映方式的变化
②没有被反映者就不可能有任何意识的内容
③有什么样的意识内容就有什么样的反映对象
④意识内容的变化根源于社会生活实践的变化
Lily is a helpful girl．At school，she____Mary with her Maths．She cleans the desks and ____up rubbish．She is helpful after school too.She____the newspaper to her grandparents.She gives back things.She____．She is a good girl．Her classmates often____her.
