based on Unit 2, Writing ex. 30

Read the riddle and fill in the letters into the gaps after the riddle to find out the answer

My first letter is in net but not in pet;

My second letter is in bed but not in bad;

My third letter is in flew but not in fly or egg or you;

My fourth letter is in sat but not in cat;

My fifth letter is in pot but not in not;

My sixth letter is in ant but not in tent;

My seventh letter is in pen but not in hen;

My eighth letter is in end but not in and;

My ninth letter is in rat but not in fat;

What am I?
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