—Welcome to Hechi!—____.
— I think the man over there must be Bob.— It _______ be him. He has gone to England.
— What is Grandma cooking in the kitchen? — Fish, I guess. How nice it _______!
The shop assistant showed her several mobile phones and she chose _______expensive one.
China successfully sent the Shenzhou-8 spacecraft into space _______ November 1, 2011.
— Whose shirt is this? Is it Tom's? — No, it isn't. _______ is white.