I didn't see her coming out.She ____ her homework in the room.A.could do B.could be doing C.might do D.might be doing为什么?can,could也可以表示推测的吧，为什么直接就把AB排除了？

I didn't see her when I left是什么意思 I didn't see her car yet.(改错) i didn't see she thought I didn't see her,[ A;did heB;did IC;didn't sheD;didn't I必须有理由 I didn't go to see her because she was ill．与I didn't go to see her,because she was ill．的区别 She walked past me,but I didn't see her是什么意思 why didn't I see that? you didn't see him and____did i At f___,I didn’t like her. i didn't see the aliens.she didn't see t( ) either. I ____(see)him,but he didn't see me -Did you return Helen's call?-I didn't need to_I'll see her tomorrow.A though B because Although I didn’t understand it at that time,I_t______came to see the truth of her words. i can't see her ___clearly (sign) I didn't see her in the meeting-room this morning.she(couldn't have spoken) at the meeting我觉得应该是：mustn't have spoken Jim passed by and he didn't see her.同义句Jim passed by and he didn't see her.=Jim passed by _________ __________ her.填空 Mary must have gone to the cinema when I went to see her yesterday,__?A.didn't sheB.mustn't shewhy we choose A 请问I didn't see him和I haven't see him的区别