10.Yao Ming put his effort _____ basketball training _____ a very young age.
He didn’t ____ his homework. He ____ TV all night yesterday.
---- 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 ________.