I found ___________ difficult to make sounds like birds.
_______ buy your ticket from a ticket machine. There are lots of people there.
John had a short walk after lunch,_______?
---How often do you see your grandparents?---_______.
_______ fine day it is! Let’s go and fly a kite.
---Which city has _______ population, Shanghai, Hongkong, or Qingdao?---Shanghai, of course..