Sarah and Janet have been friends since they_____ (start) school. They do everything together: study, read, watch TV, surf the Internet, play sports and listen to music. Anyone_____ has a problem can ask the other for help. When Sarah was in the ____ (three) grade, some of the other students made fun of her_____ she was shy. Janet told the other students to stop_____ (make) fun of Sarah, and she helped Sarah overcome her shyness. In the fifth grade, Janet had_________ (difficult) in her maths class. She studied hard, ________ she just couldn’t understand the homework. Sarah helped Janet_______ her homework and________ (patient) explained every exercise to Janet. After six months, Janet did much better and even got _____  “A” in the maths exam.