—What do you think of John?—He’s a good boy, but he ______ be really stubborn at times.

  --- Whose hair band is this ?  ________ it be Kate’s ? --- I’m not sure . It ________ be hers.

The Spring Festival   in January or February.

--- My son is _____ to be seen. Where has he gone? --- I think he _____ in the building. 

 -Look at the picture on the wall. It         be David's.-Yes, his name is on the first page.