You should arrive at the air port one and a half hour earlie

You should arrive at the air port one and a half hour earlie one and a half hours 还是hour You should be able to work at least half an hour at a time w the boy always stays here for(?) a.one and a half hour b.one one and a half hours 和 an hour and a half 就是说 超过一个小时候 hour One and a half an hour 和An hour and a half 有什么不同 The boys arrived at school_____late.A.half an hour.B.one hou 5、It took us ___ to finish the work.A.one hour and a half B. The train_____ (arrive) in half an hour half a sandwich,half hour,one and a half hour.这些half的用法都不相同, one and a half hours?还是one and a half hour? 是one and a half hours还是one and a half hour