Why are you in such a hurry, John? — There _____ a basketball match between Class2 and our class in 10 minutes.

I hear you have moved into your new house .Congratulations ! -—Thanks. I especially like my study _______ is big and bright.

Whose French book is it?– It __________ be Lucy’s. Look! Her name is on the book!

Whose books are these? —Maybe ________ Lucy’s.

The research is so designed that once _____ nothing can be done to change it.