You really don't know what we ______ while we were working on this project .
The mother didn’t know _____to blame for the broken glass as it happened while she was out.
Behind the coach _____our team wearing blue suits.
The poor little boy who _____caught stealing a cake over there is an orphan.
-----Did Mary come to the party?---I don’t know.She _____while I was out.
The old man leads ______happy life now, but he will never forget ______hard time when he was poor.