So little（）about the topic that I had nothing to talk about.
A: will I knew
B: did I know
C: do I know
D: have I known
A: will I knew
B: did I know
C: do I know
D: have I known
举一反三
- Little _____ about him when I first met him in that company. A: have I known B: had I known C: do I know D: did I know
- 25. So little _____ about mathematics that the lecture was completely beyond me. A: I know B: I knew C: do I know D: did I know
- It could have saved me some trouble （） about it. A: had I known B: I had known C: did I know D: I knew
- Little ______ when I took the trip where it would lead me. A: have I known B: had I known C: do I know D: did I know
- ______, I would have phoned you. A: If I knew it B: Had I known it C: If I know it D: Did I know it