1,My sister don't have a house.
don't => doesn't
2. We walk in the moutains at the moment.
( do đây là thì hiện tại tiếp diễn ⇒ walk -> are walking)
3.
How many season are there in a year?
season -> seasons
4.
It's often cold in the summer.
cold -> hot
5.
How much oranges do want?
how much -> how many
.
. ĐÚNG 100%