51. You are very young. You can’t go out alone at night ................................................................................................. 52. You aren’t strong . You can’t lift the table . ................................................................................................................ 53. I’m very sleepy . I can’t drive . ........................................................................................................ 54. This book is cheap . We can buy it . .......................................................................................................... 55. He is fat . He can’t run fast . ........................................................................................................ 56. I’m ver hungry . I can’t work . ................................................................................................................. 57 . The soup is very salty .I can’t drink it. ............................................................................................................. 58. Timothy isn’t fast . He can’t lift the box. .................................................................................................................. 59. Liz is very young .She can’t stay at home alone . ....................................................................................................... 60 . These oranges are sweet . We can eat them . ...........................................................................................................