After class, we often discuss exchanges, such as if she doesn't understand the place, I can explain it to him, I will explain to her, if I encounter any problems if she knew that he would have told me.
After class, we often discuss the exchange, such as if she did not understand where I can give him to explain, I will explain to her that if I encounter any problems if she knew, he would tell me.
After class, we often talk about communication, such as if she does not understand the place, I can explain to him, I will explain to her clearly, if I have any problems if she knows, he will tell me.