Food is very important . Everyone n　 (81) to eat well if he or she wants to have a s　 (82) body .

Our minds a　 (83) need a kind of food . That kind of food is knowledge(知识).

When we are very young , we start g　 (84) knowledge . Young children like watching and listening . Colour pictures especially(尤其)interest them . When the children get o　 (85), they like reading . When s　　 (86) interests them , they love asking questions .

Our minds like our b　　 (87) , always need the best food . Studying by o　 (88) can bring the most knowledge .

I　 (89) someone is always telling us answers , we never learn well . When we study correctly and get knowledge on our own , we shall learn more and understand b　 (90) .

80. In the factory there was a big workshop and in it 　　　(be)fifty people .

79. Tom fell off his bike , and he 　　　(hurt).

78. When I got there , I found him 　　　(lie)on the ground .

77. When Liu Mei sees the 　　　(worry)woman , she stops .

76. His father’s 　　　(die)made us sad .

75. We love the country in spring because the flowers smell so 　　　　.(well)

74. We hope your children grow happily and 　　　　.(health)

73. Peter 　　　(fly)to Japan the day before yesterday .

72. Jack listened to music instead of 　　　(fix)his bike yesterday .