Hi Dalvinder, I completely agree with you! I understood what you wished to convey, but I would make three important corrections. First, "keeps patience" sounds awkward to native ears. I feel most English speakers would say "remains patient" or "keeps her patience". Second, the verb "explain" is a ditransitive verb, which means it has two objects. One of the objects in your sentence is "her students", but what exactly is she explaining to them? For example, you might say "[She] remains patient while explaining concepts to her students." Third, a comma is unnecessary in this sentence. Otherwise, this is great. Keep up the good work!