改错:she rans half a mile in half an hour.
改错:she rans half a mile in half an hour.
She ran a half mile in a half hour.
She ran a half mile in a half hour.中a可以放在half吗?
she -------(be)back in half an hour
half an hour or a half hour?
a half hour还是half an hour?
There will have a basketball game on TV in half an hour.改错
they will go back () A after half an hour B in half an hour
she walks in the garden f--- about half an hour.
a half of an hour
an hour and half还是an hour and a half
a half mile 还是half a mile