classes:  lecturer. There are many students who are afraid to ask questions, so teachers should be willing to help students do their homework enthusiastically, more fun sometimes students need.  curriculum. There are many students who are afraid to ask questions, so teachers should be willing to help students do their homework enthusiastically, more fun sometimes students need.  facility. There are many students who are afraid to ask questions, so teachers should be willing to help students do their homework enthusiastically, more fun sometimes students need.  general. There are many students who are afraid to ask questions, so teachers should be willing to help students do their homework enthusiastically, more fun sometimes students need.