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