I don’t know ___________ he is well or not.
举一反三
- I don’t know ______ he will agree to plan or not.
- 中国大学MOOC: I don’t know ________ he will come or not.
- I don't know ______ he will come or not. A: if B: whether C: when
- I don’t know ________ he will come or not. A: if B: whether C: that D: what
- I don’t know ______ or not. A: whether he is at home B: if he is at home C: that he is at home D: whether is he at home