study lost in thought for a long time, I suddenly realizedthat nothing in the world remains

Making a speech like that is not ________ for him as a teacher.[ ]

When he left the room, he ________ the door key to me. [ ]

Jim talked for about half an hour yesterday.Never＿＿＿＿＿ him talk so much

In this lecture, I can only give you a purelyview of how we can live life to the full and make some suggestions about the future.