All these words contain the long 'ee' phoneme, but spelt in different ways.
sheep
peach
thief
donkey
teddy
In words like he, she, me, we and be, the phoneme is spelt with just a single 'e'.
In this worksheet you can practise reading sentences and finding words containing the long 'ee' phoneme.
It helps to read the sentence out loud to hear the sound could be beneficial in this worksheet