答案:
( 1 ) 1.worries 2. worry
3. worried 4. worried
( 2 ) 1. worthy 2. worthy
3. worth 4. worth
5. worth, worth
( 3 ) 1. youth 2. youth
3. young 4. Young
( 4 ) 1. imagine 2. imagination
( 5 ) 1. ill 2. illnesses
( 6 ) 1. graduated 2. graduates
3. graduate 4. graduation
( 7 ) 1. gentle 2. gently
3. gentleness
( 8 ) 1. height 2. Height
3. high 4. high
5. highly 6. highly
( 9 ) 1. health 2. Health
3. healthy 4. healthy
( 10 ) 1. harm 2. harms
3. harmful 4. harmless
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