develop our ____(能力）to study on our own.填ability还是abilities?

develop our ____(能力）to study on our own.填ability还是abilities? develop our reading ability为什么用our we work hard to（）our ability Dictionaries are ____(help) to our study. Then we start to shape our thoughts （填单词）our own words and f study on our own中,on和own怎么解释?整个短语如何理解? .It's not good for our English study to think ______ our own our own our own According to scientists,our mental abilities begin to _____ According to scientists,our mental abilities begin to declin When we study by the right way and get knowledge on our own Mother said we should ____ all our energy on our study.A spe