语法与词汇 Some schools have tried to attract and _____ able teachers by improving working conditions andraising salaries.
【正确答案】 A
【答案解析】句意：一些学校试图通过改善工作条件和提高工资来吸引和留住有能力的教师。retain保留。strive努力，力图。appeal上诉；（与to连用）吸引。