half an hour前面填什么介词MY grandparents often go walking＿halif an hour after supper.

half an hour前面填什么介词MY grandparents often go walking＿halif an hour after supper. Tirty m____ is half an hour.应填什么啊? half an hour? 什么意思? Half an hour =什么? After class,I play basketbally ( )my classmates ( ) about half an hour.括号里填介词 I watch TV news ( )about half an hour every night.括号里填介词 half an hour 和a half hour有什么区别? we walked () an hour 填介词 after half an hour什么意思? half an hour ago 什么意思? 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 It takes me half an hour ( ) my homework every day应该填什么?嘻嘻、谢啦 N it takes me half an hour to clean my room.(N开头填什么, N it takes me half an hour to clean my room.(N开头填什么, a half hour还是half an hour? 是half hour还是half an hour? half an hour or a half hour?