Which city has _____population, Shunghai, Hong Kong or Qingdao——Shanghai, of course.

I think students should _______ to have at least one hour a day for sports.

It was foolish of you to take a taxi______you could walk there in five minutes

Those T-shirts are usually $35 each, but today they have a ______ price of $ 19 in the Shopping Centre.

Freezing winter is harmful _________ orange trees.