11.  This is true in the past, but things have changed a lot nowadays.

12.  But things have changed a lot.

13.  Things have changed a lot and people have to find jobs by themselves.

14.  But nowadays things have changed a lot.

15.  Things have changed a lot in recent years.

16.  Nowadays things have changed a lot.

17.  Nowadays, though the life of Chinese has changed a lot, they still consider the Mid-Autumn Festival a valuable chance to get reunited with the families.

18.  But now, it changes a lot.

19.  However, things have changed a lot now.

20.  Nowadays, things in China have changed a lot.