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Must; can’t May; must Can; mustn’t Can’t; can
Must; can’t May; must Can; mustn’t Can’t; can
Yes, I can’t Yes, I can No, I can No, I don’t
how swim; what to do how to swim ; what to do it how to swim; what to do what to swim; how to do
can; can can; can’t can’t; can can’t; can’t
Yes, I am Yes, I can I can swim I don’t know
can I can't they can't you can they
do I can I do they can they
how swim; what to do how to swim ; what to do it how to swim; what to do what to swim; how to do
Must; can't May; must Can; mustn't Can't; can
Must; can't May; must Can; mustn't Can't; can
Must; can't May; must Can; mustn't Can't; can
Yes，I can No，I can't No，they can't Yes，they can't
So I can So can I I so can Can I so
swim to swim swimming to have swum
can’t；And can；But can’t；But can；And
swim , swim swimming , swim swim , swims swimming, swims
Must , can’t May , must Can, mustn’t Can’t can
Can; good Do; good Can; well Do; well
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