Please correct it for me

Many people think that studying in group only brings us only advantage but disadvantage. Actually everything has both sides and the issue which I am about to mention is the same .First., studying in group help us to unite with other people , so the members of the group has harmony , as a result we are more skillful in putting across with strangers . Second . it has also make the issue which we have to solve become to solve easily because studying together creates a good or fun feeling . Finally , in a group has a strick schedule , which help members are more aware of studying .So , what are disadvantages of studying in a group that members established in this group will be too reliable . They may only wait for the outcome of lesson but not to discuss with others . and it's not effective . Morever , studying in group sometimes has disagreement and discomfort . Consequently, they will make arguments and break off. For example , I hate someone who has the same opinion with me . Im so annoyed about it . Next , studying in group is very time-consuming . he is so free to take it . Whereas he only need 10 minutues to do this , but as a matter of a fact he is offer than 5 minutes . On the whole , studying in group has either advantage or disadntages