More than 10,000 relics, ____ between 5,000 to 3,000 BC, ____ at Sanxingdui since it was first discovered.
It was __________ he came back from school today __________ he found his new book missing.
It was only when I reread his poem recently __________ to appreciate its beauty.
__________ you met the foreigner from Canada?
It was in the office __________ my sister works __________ I met the new manager.
—Have you got any particular plans for the coming holiday? —Yes. __________, I'm going to visit some homes for the old in the city.