half an hour （ ） 填past/passed/has past/has passed 原因?pass 的过去分词不是past吗?那passed是什么单词的过去分词?

half an hour=?（两个单词） a half hour还是half an hour? 是half hour还是half an hour? half an hour or a half hour? half an hour later half an hour造句 Half an hour. It took her half an hour to get there.(改同义句）she（spents）half an hour （getting） there括号里填的对吗? It took her half an hour to get there(改同义句） She （ ）half an hour ( )there 括号里填什么? He usually ( )(放松）for half an hour after running 空格填什么 can you( ) （ ）finish the homework in half an hour?那两个空怎么填？ I spend half an hour ___to school.为什么填getting? Tirty m____ is half an hour.应填什么啊? we read english for half an hour every day(对for half an hour提问） it took him half an hour to walk there.划线部分提问（half an hour） half hour =half an hour half hour half an hour 的意思有和区别? an hour and half还是an hour and a half half an hour or hour中文