I don’t know ___ he could finish the job on time or not.
A: why
B: whether
C: if
D: what
A: why
B: whether
C: if
D: what
举一反三
- I don’t know ________ he will come or not. A: if B: whether C: that D: what
- I don’t know __________I will get the job or not. A: while B: then C: so that D: whether
- I don't know ______ he will come or not. A: if B: whether C: when
- I don't know ______ I can come or not. A: whether B: if 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