sang NV,PN
1 We studied a very hard lesson yesterday.
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2 We have studied alonost every lesson in this book so far.
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3 We have never watched that television program.
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4 My wife and I have traveled by air many times in the past.
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5 I have read that novel by hlning wey several times before.
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6 I had a little trouble with my car last week.
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7 I have had no trouble with my car since than.
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8 He watched an interesting program on television at night.
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9 I have seen an elephant several times.
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10 petter played football yesterday
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