TWORLD OF NATURE 4 Lesson 10 2 3 o 4 3 r. 5 16 Across: 7) usual 8) clean 9) silly 12) ugly 7 S14 S 8 4 1 e an t d lisli Down: 1) best 2) difficult 3) happy 4) interesting 10 S 11 12 a 5) safe 6) old 10) small 1 11) angry Find the opposites. Write the words into the crossword puzzle.