In　　　,the northerners are keen on dumplings while the southerners are fond of rice.

Fifty-six ______ twenty-seven makes eighty-three.

Last month in the US Open final in New York, the Scot won again and         his first Grand Slam win．

We have been good friends for years.And we must ___ the friendship between us.

 Teenagers are damaging their health because they often ______ themselves to so many electric products.