Điền vào chỗ trống sao cho thích hợp

Ví dụ: 1, They did they homework yesterday.
- They didn't do their_________.
- Did they do__________.
2, He bought a house last week.
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3, My sister had a big cat.
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4, Susan alwways has short hair.
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5, He spoke English fluently.
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6, He flies the kite every Sunday.
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