I don’t know whether he will come.
举一反三
- I don't know or not he will come. A: whether B: if C: when D: how
- I don't know ______ he will come tomorrow. ______ he comes, I'll tell you. A: if; If B: if; Whether C: whether; Whether
- I don't know ______ he will come or not. A: if B: whether C: when
- I don't know _________ he will come tomorrow. _________ he comes, I'll tell you． A: if; Whether B: whether; If C: whether; Whether D: if; If
- I don't know _______ he will come tomorrow. _________ he comes, I'll tell you. A: if; Whether B: whether; Whether C: if; That D: if; If