i always study by (work) with a group

i always study by (work) with a group I study by reading the textbook. i study english by taking p___ I study by working with my friends. I study by listening to sapes. I study by working with friengs?急用!应该是I study by working with friends. I will always be by your side I will always stand by you I will always stay by yur side... I will always stand by your I'll always be by your I'll be always by your side I'm always by your side? i always make the bed by myself I have always by your side 、 急 i was always by your side . I am always saved by your smile. 关于study的问题：I study by working with friends ,这时,study