The Great Wall is ____ tourist attraction that millions of people pour in every year. [ ]

In time of war，different parties tend to________their political differences to fight against foreign invaders shoulder to shoulder.

Listen! Is Kate playing the piano in the room —No. It _________ be her. She has gone to London with her parents.

These new books to the childen in the countryside in three days.

If you want to try some of the most _____ skiing in the world, you should try a visit to Kitzbuel, _____ in southern Austria. [ ]