It is a dangerous practice to sit on the motorbike___though

It is very dangerous to sit on the t( ) of the building run,street,the,dangerous,on,it,busy,is,to.造句. 填空Many children like to sit on a s__ in the park.it is very A dog is on the chair A.sit B.sitting C.siting D.to sit ------dangerous it is to ride fast on a busy street!A What B --- dangerous it is to play football on a busy road A how B ————,it is dangerous to look out of windows when are on the The chair is broken,so it is _u________ to sit on you—— play on the road.It is dangerous.A can not B should C the program is like a window on the would if you sit by it a 深夜在街上散步有些危险It's a little dangerous to ---- ---- on the stree there is a （c ） under the tree.let is go and sit on it