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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 29
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 42
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<PAGE> PAGE 43
055 A000800 Y
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<PAGE> PAGE 44
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<PAGE> PAGE 45
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SIGNATURE JAMES O. YOST
TITLE ASSISTANT TREASURER
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<CIK> 0000798244
<NAME> MFS SERIES TRUST I
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000798244
<NAME> MFS SERIES TRUST I
<SERIES>
<NUMBER> 022
<NAME> MFS CASH RESERVE FUND - CLASS B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-1996
<PERIOD-START> SEP-01-1995
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000798244
<NAME> MFS SERIES TRUST I
<SERIES>
<NUMBER> 023
<NAME> MFS CASH RESERVE FUND - CLASS C
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-1996
<PERIOD-START> SEP-01-1995
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000798244
<NAME> MFS SERIES TRUST I
<SERIES>
<NUMBER> 011
<NAME> MFS MANAGED SECTORS FUND - CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-1996
<PERIOD-START> SEP-01-1995
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000798244
<NAME> MFS SERIES TRUST I
<SERIES>
<NUMBER> 012
<NAME> MFS MANAGED SECTORS FUND - CLASS B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-1996
<PERIOD-START> SEP-01-1995
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000798244
<NAME> MFS SERIES TRUST I
<SERIES>
<NUMBER> 05
<NAME> MFS RESEARCH GROWTH AND INCOME FUND
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-1996
<PERIOD-START> JAN-02-1996
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000798244
<NAME> MFS SERIES TRUST I
<SERIES>
<NUMBER> 08
<NAME> MFS SPECIAL OPPORTUNITIES FUND
<MULTIPLIER> 1
<S> <C>
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<FISCAL-YEAR-END> AUG-31-1996
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