There's plenty of time. You ______ come so early.
- needn't
- can't
- must
- mustn't
He got drowned because he ______ swim.
- can't
- couldn't
- mustn't
- shouldn't
My brother _______ come next week., but I don't think he will.
- would
- can
- might
- ought
You smoke too much. You ______ cut it down.
- ought
- mustn't
- might
- should
You _______ say those words in front of the children.
- mustn't
- oughn't
- mightn't
- mustn't have
You ______ heard that explosion yesterday.
- ought
- must
- should
- must have
Excuse me, ______ I smoke in this room?
- can
- may
- should
- ought
I think I ______ to stop smoking.
- ought
- should
- could
- must
______ I come in Mr Green, or am I bothering you?
- May
- Can
- Must
- Should
You've been working hard.You ______ be tired.
- might
- must
- ought
- need