protect your environment. If we fail to do so, we'll live to regret it.

（II卷）

One day, little Tony went to a shopping center with his parent. It was very crowded. Tony saw a toy on a shop window. He liked it so very much that he quickly walked into the shop. After looks at the toy for some time, he turned around and found where his parents were missing. Tony was scared and begun to cry. A woman saw him crying and telling him to wait outside a shop. Five minutes later. Tony saw parents. Mom said, "How nice to see you again! Dad and I were terrible worried." Tony promised her that this would never happen again.

参考答案

（I卷）

1.think-thought 2.添加the 3.or-and 4.on-with 5.删除been 6.seriously-serious 7.airs-air 8.Much-many 9.found-find 10.your-our/the

（II卷）

71. parent改为parents 72. on改为in 73. very去掉 74. looks改为looking 75. where改为that 76. begun改为began 77. telling改为told 78. a改为the

79. saw后加his 80. terrible改为terribly