He doesn't know ____to stay or not.
举一反三
- He doesn’t know _________ (if / whether) to stay or not.
- He doesn’t know ______ to stay or not. A: whether B: if C: either D: if he will
- He doesn't know to say or not. A: if B: eithe C: whethe D: if he will
- _____ what he can do. He might get a job tomorrow. He might stay out of work for weeks. A: We didn’t know B: He doesn’t know C: There is no knowing D: It was known that
- Little ________ that the police are about to arrest him. A: he knows B: he doesn't know C: does he know D: doesn’t he know