Verb conjugation of "foster" in English

It looks like we need to invite Erika again to my home, once the cake is ready. Of course, this should be done before Sunday to stay in the chocolate cake race. We should buy cream too.
I have not been in eastern Germany for a long time, because I have never really had time to travel. What do you do for living and in your leisure time, like the weekends and evenings.
My Spanish is weak, and I need to improve it here. But it is very difficult because I have many other things to do. I must take care of my family and my friends and have no time for Spanish.