—Are you going to Mary’s birthday party, Jack?—I’d love to, but I _______ to come to her party.
-----Hello! May I speak to Jane? -----_____.
-----Please don’t throw paper on the floor. -----_____, I won’t.
-----Do remember to take your bag when you _____ the bus. -----Thank you.
-----I called you yesterday evening, but you were not in.-----Sorry, I _____ in the shop with my mother.
-----Look at the elephants. Their ears _____ open fans. -----Oh, that’s right.