she thought I didn't see her,[ A;did heB;did IC;didn't sheD;didn't I必须有理由

she thought I didn't see her,[
A;did he
B;did I
C;didn't she
D;didn't I
必须有理由

c
反意是对she thought 所以用didn't she

C

选C
这句话的重点在前面she thought而不是后面

c

c

did she 这句话主语是她啊，是她认为 还有就是有didn't see 后面反问要用肯定的 （我解释的不好啊，但是态度很认真呵呵）