Choose the correct word whose underlined part is pronounced differently from the others

Mn ơi, giúp em với ạ !! Em đng cần gấp !!
7.CHOOSE  the correct word whose underlined part is pronounced differently from the others.
(1 Điểm)
difficult
cabbage
lettuce
because
8.CHOOSE  the correct word whose underlined part is pronounced differently from the others.
(1 Điểm)
flood
zoo
choose
food