改错。
假定英语课上老师要求同桌之间交换修改作文，请你修改你同学写的以下作文。文中
共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧）,并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：
1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
After school I went to home for supper. When I got home, I found my mother laying in bed. She was
ill. Unluckily , my father was away from home in business. "What shall I do?" I thought to me. Since
Mother was ill, I must take well care of her. So I decided to try cooking by myself. I did the cooking
with great difficulty but it got burnt at last. I had thought Mother would never like. To my joy, Mother
praised me for the meat I have cooked. She said,"It tastes delicious. I'm very pleasing with it." I knew
Mother was encouraging us to do more by myself.
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LiNH2＋LiH，下列有关说法正确的是（ ）