You _____ tell anybody about this——it’s a secret.A. can B. must C. mustn’t
— Where _______your books? — _______ in the bookcase
— Does David have a ping-pong ball? —________. But he has some tennis balls.
.Hi,Linda. This _____ my sister and those ______ my brothers.
_____ your brother_____ baseball?
— ______are my dictionaries ? —They’re in the schoolbag.