正确形式填空what's the number of your 空[fly] out of beijing it's n

正确形式填空what's the number of your 空[fly] out of beijing it's n What's the __(fly)number of their plane? what's the number of your flight leaving Beijing?中的leaving 可 what's your (fly) number What’s the number of 原句：What's the number of your telephone,please? What‘s telephone number of your friend? What's the-----(fly)number of their plane to the UK?填什么 what's the s____ of your basketball It's round what's the number of the smith flight leaving beijing?为什么用in What's the number of the flying to Beijing?这句话哪里错了 what`s the number of your tilephone?为什么加of和the