Translation of vorenthalten

Study material is not easy to find. Unfortunately I have not received any such material yet. To give your students brochures and leaflets is in my opinion not the ideal. It cannot be compared with online studies.
The easiest way of writing sentences in Spanish and English is to communicate with other people by email or by chat. I found the different time forms quite in Spanish very confusing at the beginning and it was the most difficult part.
If you want to write again in Spanish, just do it. I have much to do at the moment, again and again... Sometimes it happens that I must work at night until the early hours of the morning.