—Is the woman over there Miss White? —It ______ be her. She’s gone to Hangzhou.

---Listen! Is Kitty in the next room?  ---No, it ______ be Kitty. She has gone to Beijing.

The children _____lost in the woods; otherwise, they would have been at the lakeside camp as scheduled. 

--- The T-shirt with Michael Jackson’s picture ____ belong to Tom. He likes him a lot.---No, it ______ be his. He dislikes black colour.

I have never heard______.