______ it rain heavily tomorrow, we would have to put off the visit to the Forbidden City.
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.
I am going to meet Tom __________ they say is a good boy.