用所给词适当形式填空。 (1)I _________ my homework yesterday.(finish) (2)She is __________ a letter.(read) (3)Amy _________ a book last week.(buy) (4)Sam _________(do not) go to the park yerterday. (5)Can you _______ high?(jump) (6)My mother _________to shanghai tomorrow.(go) (7)He will _________ hamburgers.(eat) (8)I am going to _________my trousers.(wash) (9)She_________ got a new toy.(have) (10)You __________a very good boy.(be)