I ______ follow you. Would you please repeat it?

You ________ come tomorrow. I can do it myself.

________ people used the computer thirty years ago, but now it’s very popular.

--Listen! Is it Linda singing in the next room? --No, it __________ be her. She is still in Shanghai.

─ Is the woman in white our manager?  ─ It ________be her. She has just left for Shanghai.