has

The company has ____________ several major changes

What shall we use for power when all the oil in the world has _____?

____ the time his son arrives at home, he has cooked supper for him.

It has been _______ that Mary and Tom’s wedding will be held next Sunday

China has got a good          for fighting against the flu with its careful and smooth organization.

Are you worried____ your sister who has left home alone?

Since China has entered the WTO, the ______ on foreign businesses will gradually be reduced.

In Chinese culture, there has always been an emphasis ______ traditions and customs

A child from a poor family has the right to receive ________

Everyone of us has _____ computer ; ______ computer is ____ brain