a half hour对吗
half an hour or a half hour?
a half hour还是half an hour?
half a hour
a half of an hour
two hours and half a hour 2个半小时 这种表达对吗
half an hour 和a half hour有什么区别?
an hour and half还是an hour and a half
a half hour later\after half an hour\after half an hour late
half an hour,half hour,a half hour哪些对,那些错
they walked for.A,an hour B.half a hour C,half an hour 选哪个
He was here().A.half an hour before B.half hour ago C.half a
a half hour还是a haif hours