Chủ đề:
Luyện tập tổng hợpCâu hỏi:
I . Combine each pair of sentences below using relative pronouns.
1.The boy was friendly. I spoke to him on the bus
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2.The snake was harmless. My boys were playing with it
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3.The house was built in 1980 . No-one has lived in it for a long time
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