He ought to have looked after his father, ______? A: oughtn't he B: ought he not to C: oughtn't he to D: oughtn't to he

Peter oughtn’t to have done it in the first place,____?

You （）take this job. It’s a great opportunity A: used to B: had better C: oughtn’t to D: are able to

I________ mind if you don't come A: will not B: don’t need C: don't dare D: oughtn’t to

But you have to study hard, (). A: mustn't you B: won't you C: don't you D: oughtn't

3.---What do you think we can do for our aged parents? ---You ____ do anything except to be with them and be yourself.A. don't have to B. oughtn't toC. mustn't D. can 't A: A. don't have to B: B. oughtn't to C: C. mustn't D: D. can 't

We ought to help each other in our work, ____? A: oughtn't we B: should we C: shouldn't we D: ought to we

He _____ have left the campus, for I saw him in the classroom just a minute ago. A: mustn’t B: shouldn’t C: couldn’t D: oughtn’t

She oughtn't to have stood in a queue; she____her train ticket from the Automatic Ticket Machine. A: could have got B: must have got C: has got D: got

【单选题】With all the exercises unfinished, he ________ to watch the football match yesterday evening even though he was so anxious and excited about it. A. mustn't go B. wouldn't go C. oughtn't D. should