()1. My grandmother worked in a big school.
()2. She was a very nice teacher.
()3. She still(仍然) works now.
()4. She helps me and my friends with our homework.
()5. She writes stories for us.

1.F 2.T 3.F 4.T 5.F

二、连词成句。
1. are,what,going,you,to,there,do

2. grandmother,my,teacher,is,a

3. the,coat,how,much,is

4. you,do,a,have,library

5. an,teacher,she,English,is

【解析】：
这些题目考查的是英语句子的连词成句能力，需要根据英语语法规则和句子结构，将给定的单词组合成完整的句子。对于这类题目，我们首先要识别句子的主语、谓语和其他修饰成分，然后按照正确的语序进行组合。
1.题干中有"what"可知，本句应为特殊疑问句，疑问词what放在句首，are going to为谓语动词，you为主语，do为动词原形，there为副词，对画线部分提问就是把are提到主语前，其他部分依次排列，可得句子What are you going to do there?。
2.题干中有is可知，本句应为陈述句，主语为my grandmother，a teacher为表语，陈述句主语放在句首，谓语动词紧跟其后，可得句子My grandmother is a teacher.。
3.题干中有"how much"可知，本句应为特殊疑问句，疑问词how much放在句首，is为谓语动词，the coat为宾语，特殊疑问句把疑问词放在句首，后接疑问句语序，即is放在主语前，可得句子How much is the coat?。
4.题干中有do和you可知，本句应为一般疑问句，助动词do放在句首，you为主语，have为谓语动词，a library为宾语，一般疑问句把助动词放在句首，后接主语和谓语动词，可得句子Do you have a library?。
5.题干中有is可知，本句应为陈述句，主语为she，an English teacher为表语，陈述句主语放在句首，谓语动词紧跟其后，可得句子She is an English teacher.。
【答案】：
1. What are you going to do there?
2. My grandmother is a teacher.
3. How much is the coat?
4. Do you have a library?
5. She is an English teacher.