阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

Sarah and Janet have been friends since they 【小题1】 (start) school. They do everything together: study, read, watch TV, surf the internet, play sports and listen to music. 【小题2】 one of them has a problem, she can ask the other 【小题3】 help. When Sarah was in the third grade, some of the other students made fun of her 【小题4】 she was shy. Janet told the other students to stop 【小题5】 (make) fun of Sarah, and she helped Sarah overcome her shyness. In the 【小题6】 (five) grade, Janet had 【小题7】 (difficult) in doing her maths exercises. She studied hard, 【小题8】 she just couldn’t understand the homework. Sarah helped Janet with her homework and 【小题9】 (patient) explained every exercise to Janet. After six months, Janet did much better and even got 【小题10】 "A"in the maths exam.