—She's an excellent teacher. I've improved a lot since she taught ___English.
A:ours, us
B:our, our
C:our, us
看图列算式。
____
唐中宗时期若要进行科举考试选拔官员,按制度规定其运作程序是
买一个足球需要m元,买一个篮球需要n元,则买4个足球、7个篮球共需要( )