________ I can see, there is only one way to solve this problem.
An exhibition of paintings __________ at the museum next week.
Catherine Ⅱ had the Amber Room moved to a palace outside St. Petersburg __________ she spent her summers.
The doctor __________ she sent her friend is very well known.
Do you know the factory, __________ products are of high quality?
Jim passed the driving test, __________ surprised everybody in the office.