You'd better take a heavy coat. Sometimes it ______ be very cold.

If I _______ plan to do anything I wanted to, I’d like to go to Tibet and travel through as much of it as possible.

--What do you think of the book you borrowed from the library yesterday?  --I have no idea. I____________ read it.

--Who’s singing in the next room? Is it Lucy?---It       be her. She has gone to New York.

My English teacher was angry           Tom.