问题详情：
根据句意及汉语提示完成单词
1. These books are for the (儿童)in trouble.
2. I have a pen pal, she is an (美国的)girl.
3. My mother buys a (可口的; 美味的)cake for me on my twelfth(第十二)birthday.
4. There is a big (超市)in our town. We often go there to buy food and clothes.
5. My sister (学习)in Class Three, Grade Seven.
【回答】
1. children 2. American 3. delicious 4. supermarket 5. studies
知识点：单词拼写
题型：完成句子
