1
)
(
)
;
2) : twenty of ;
3) () , (); chapter twenty ; Room twenty ;
4) : in twenties - ();
5) ; she is twenty ; she must be under twenty ; she must be about twenty ; she must be over twenty ; at twenty , ; a girl of twenty / i> ;
6) i> ;
7) ;
twenty books ; twenty minutes ; twenty tens are two hundred ; twenty times as much ;
twenty-one, twenty-two, etci> , ..i>; twenty-first, twenty-second, etci> , ..i>