题目内容：

请回答下面几道英语题目,
my mother often 《》｛worry｝about my study.
we have 《》｛much｝time than we thought
we can only get good grades by 《》｛study｝ hard

优质解答

my mother often 《worries》｛worry｝about my study.
we have 《more》｛much｝time than we thought
we can only get good grades by 《studying》｛study｝ hard