请懂英语的朋友帮忙用英语简单回答一下这几个问题,
8.what'sthedifferencebetweentheinstrumentalmotivationandtheintegrativemotivationofthelearner's
9.howmanymorphemesarethereintheenglishlanguagestatewhattheyareandillustratehowtheywork
10.whatisafreemorphemewhatisaboundmorphemeandhowaretheydifferentfromeachother