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