1．it's dangerous for him to ________ (漫游) aimlessly outside so late. 2．usain bolt set an ________ (难以置信的) world record in the 100meter race at the beijing olympics. 3．we missed the first few ________ (场景) of the play because we were caught in a traffic jam. 4．it wasn't your ________ (过错). you needn't apologize to him. 5．the job is not tiring at all. on the ________ (相反的), it's very relaxing. 6．by law, the youth under eighteen are not ________ (允许) to enter net bars. 7．these children are very naughty, so you need ________ (耐心) to deal with them.
