我妈妈离开家的时候忘记关灯了.
We (很少地) hang out at weekends recently.
You'll forget the dancing skills easily (除非) you practice them often.
Could you please show me your (护照), young men?
We can see clearly that Mongolia (位于) between China and Russia on the map.
More and more people have realized the importance of spreading our (传统的)culture.