【正文】 . 對(duì)你們來說 ,努力學(xué)習(xí)很有必要 . ______ __________ _______him________study hard. 9 .他付不起他孩子的教育費(fèi) He can’t _________ ________ __________ _________his child’s education. . I_______ ___________ ______ everything good you do. 。 to walk 。without ( )15,They found ______difficult to understand him. A. that B it C this D so ( )16,He found a number of people already___ there. A to work B working C work D worked ( )17,_____TV too much is bad for your eyes. A Watching B Watch C Looking D Look ( )18,I wonder ___________. A where do you live B where you do live C where you D do where you live ( )19,I have a friend _______me . A help B helping C helps D to help ( )20,I didn’t understand anything_______. A lot B very C