A) can B) may C) could
A) must B) might C) can
A) might B) can't C) must
A) could B) should C) must'nt
A) shall B) must'nt C) ought to
A) must B) can't C) might
A) may B) should C) might
A) can't B) may C) can
A) can B) must C) may
A) mustn't B) can't C) might |