___________ hour (a)an (B) a

___________ hour (a)an (B) a They will be back ___________ A.for an hour B.after an hour C.an hour ago D.in an hiur应选哪个为什么? ___________?I spend about an hour jogging. I spent an hour ___________ my homeworkquick! He ___________ that half an hour would be enough for him to get to the station,but he simply forgot that it was the rush hour.A.realizedB.assumedC.admittedD.acknowledge a hour 还是 an hour如题如题如题 a one -hour还是an one-hour a half hour还是half an hour? half an hour or a half hour? a half hour one hour对不对? half a hour a half hour对吗 ___________ ___________ you have a school trip ( ) 15.I spent half an hour ___________ my homework .finish doing sth 完成做某事( ) 15.I spent half an hour ___________ my homework .finish doing sth 完成做某事A.finish doing B.to finish doing C.finishing to do D.finishing doing in a few hour's earth hour is a global 告诉我为什么选这个 只要你说出为什么101.___________ pop music drives me out of my mind.A.The most B.Most C.Mostly D.Most of102.—How did you pay the workers?—As a rule,they were paid _________.A.by a hour B.by hours C.by an hour D. The journey takes_____.A.half an hour B.an hour half C.a half hour D.half a hour