Good friends are those who always share a smile to cheer up their friends so that they always smile in good and bad situations.
Today they seem very happy participating in learning activities in class because they are with their good friends and playmates who are always there to entertain and share smiles.
When fellow female friends are together like this, it will be the best time for studying because they both encourage each other to give their best. The class will feel busy with the presence of the two of them. This habit of always sitting together, writing together and studying together is what makes us smile when we see their habits in class.