It’s an agreement between towns or cities, _______ have similar features, such as industry, culture and entertainment.
It was last year _____ I visited the museum _____ you had visited.
______ when to leave, I could only stay at home, _____ nothing.
While building a tunnel through the mountain, _____.
— I wonder if I could use your phone for a while? — _____.
.We don't have many workers coming to the job interview. I'm afraid we may _____ workers this time.