It ______ we had stayed together for a couple of weeks ______ I found we had a lot in common.
Our manager never fails to answer a phone call ______ she is very busy.
Because of the lack of funds, the tunnel project has already fallen behind ________.
The book is rather highly priced, but so well worth ______ that it should be begged or borrowed rather than missed.
It was on the last day ______ a press conference was held by some committee members.
---What does Old Walter usually do in his retirement?---- These days he is ______ memories of village life for his new book.