$1$.
$(-)$. My brother didn't spend his summer holiday on a farm
$(?)$. Did my brother spend his summer holiday on a farm?
$2$.
$(-)$. The children don't wash their hands before meals
$(?)$. Do the children wash their hands before meals?
$3$.
$(-)$. They won't come there tomorrow
$(?)$. Will they come there tomorrow?
$4$.
$(-)$. The people weren't friendly
$(?)$. Were the people friendly
$5$.
$(-)$. Hoa doesn't like her new skirt
$(?)$. Does Hoa like her new skirt?
$6$.
$(-)$. I didn't decorate the color lights on the Christmas tree
$(?)$. Did I decorate the color lights on the Christmas tree?
$7$.
$(-)$. Liz didn't enjoy her trip
$(?)$. Did Liz enjoy her trip?
$8$.
$(-)$. He didn't send letters to his parents
$(?)$. Did he send letters to his parents?
Có 8 câu nên mik đánh số cho dễ nhìn nhé!!!