half an hour ago 什么意思?

half an hour ago 什么意思? Sam ( )here half an hour ago括号中应填什么?为什么? I got up half an hour ago.(保持句意不变）I ____ ____ up for half an hour . Sorry,I ordered my food half an hour ago.对“half an hour ago”提问 He was here().A.half an hour before B.half hour ago C.half an hour ago half an hour? 什么意思? Half an hour =什么? the class began half an hour ago的同一句 the calss()()()for half an hour . half an hour 和a half hour有什么区别? they were here about half an hour ago They left here half an hour ago.(同意句转换) About half an hour ago.中文意思是? —When________he________(return)it?—Half an hour ago. A:When________it________?(arrive)B:Half an hour ago.急! The film has been on since half an hour ago.（对划线部分since half an hour ago提问） i got up half an hour ago(保持句意不变）改成 i ____ ____ up for half an hour. lucy went out an hour ago.she will be back in half an hour. millie left the school half an hour ago millie____ ____ ____ ____the school____half an hour