—Look at the sign. You_____ fish here.—Sorry, I didn’t know.

This toy Mickey Mouse _______be Amy's. She's the only kid at the picnic.

—Who’s that over there, Is it Jane?—No, It ________ be Jane. She is ill in hospital today.

It____Jim because he left here a moment ago

—Whose shirt is this?—It ______ be Li Lei’s. It is too big for him.