Drinking tea is a common practice in daily life, isn’t it?—Yes, teahouses continue to __________up in and around the city of Nanjing.

This problem may lead to moreserious ones if ____ unsolved.

Mum, where is my lunch pack?—Just _____ it was．

He__________ a good example to us.[ ]

The UK is in the thirteenth position, ______ China is in the middle of the list.[ ]