.I am not sure ____ . Which of the following is not right?
---- Dan hurt his leg when he was playing football. ---- ________
---- What did Jack eat? ---- He ________ an apple before he ________!
--- What ________ is a basketball? ---- It is ________.
---- What did the man say to you? ---- He ________ me where the post office ________.
---- ________ it is late, I shall go home now. ---- OK, go ________.