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