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