Chuyển các câu sau 2 dạng khác.
1. My sister was born in 1990.
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2. We were on holiday last week.
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3. Were you at home yesterday?
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4. Tom wasn't at school this morning.
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5. My grandparents were't born in Argentina.
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6. Was your teacher ill?
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7. We played marbles at recess yesterday afternoon.
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8. Hung washed his clothes after having bath last night.
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9. Perter looked after his baby sister last sunday.
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10. He wanted to buy some envelopes yesterday
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