He ______ the math problem, his classmates wanted to help hi

has,he,help,to,his,with,sister,her,math He wanted to ______ his students' eyes to the world of biolo He tried his best to solve the problem,______ difficult it w 为什么说He always tires to do what he can to help his classmates most of the classmates wanted to know the way ___ he learns He is better at math than _____ of his classmates. He can't help _____ the heavy box for his classmates,for he He always help his classmate with Math. his ability to work out math problem is ----doubt because he He usually plays sports with his classmates after school?（hi He worked out the math problem f__. He often o to help me work out the problem.