Thank you David and thank you Gustavo,
I just saw this thread. It was very thoughtful of you to start it, David. It is always good to be reminded that one is not alone. We are all together, although some of us are living in confinement. On this forum, we all knew already that we shared an interest in English grammar. Now I think we all feel deeply how much more we share with each other and with everyone else on this planet. We share our fears and our hopes.
Best wishes to everyone.