A:in, discussing
B:to, to be discussed
C:towards, discussed
D:with, being discussed
如图所示的是人体部分生理活动过程示意图,数字1234表示物质,字母ABCDE表示人体器官(结构),序号①②③表示人体的某些生理过程.据图回答:
____ ____ your aunt meet you?