We don't know ___ you did it.
A: who
B: what
C: how
D: which
A: who
B: what
C: how
D: which
举一反三
- We don't know ______ they did it . A: how B: who C: what D: which
- Which one of the following may not be a symptom of culture shock（） A: You don"t know how to express your gratitude. B: You don"t know how to greet other people. C: You suddenly forget what a word means. D: You don"t understand why a foreigner shrugs.
- Sorry, we don't have the coat ____ you need. A: what B: who C: whom D: which
- ___ you did it is not known to all. A: Who B: What C: How D: Which
- I really don't know ______ about it. A: what to do B: how to do C: to do what