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