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根据短文内容，在各题所给的三个选项中，选出一个最佳选项。（短文听两遍）
( ) 16. The man bought a ring for his _________ .
A. son B. wife C. mother
( )17. He lost his ring ___________.
A. in the street B. in the store C. in the house
( )18. __________ the man was looking for the ring, his friend came up.
A. Before B. After C. When
( ) 16. The man bought a ring for his _________ .
A. son B. wife C. mother
( )17. He lost his ring ___________.
A. in the street B. in the store C. in the house
( )18. __________ the man was looking for the ring, his friend came up.
A. Before B. After C. When
