7. board n. 板，栏 blackboard 黑板 noticeboard 布告板 skateboard 滑板 cupboard 橱柜 chessboard 棋盘
8. How long does it take you to go to school? It takes me about ten minutes to get there. It takes sb. some time to do sth. 某人花费多长时间做某事 It takes me about an hour to finish my homework. 同义句转换 分析：spend …(in) doing sth. 或spend … on sth. 解答：I spend about an hour in finishing my homework.