40 БАЛЛОВ!!!!!!

1)i am a good swimmer, ____( a) amn`t; b) am; c) aren`t; d) don`t ) I?
2)he was____ ( a) are taken, b)took, c) was taken, d) were taken ) tired that I went to bed at once.
3) dinner will be served when they___ ( a) arrive, b) arrives, c) will arrive, d) arrived
4) Ann is ___( a) a, b) the, c) - , d) an ) cleverest girl in her class.

спасибо)

water___( will freeze? freeze? freezes? is freezing) when the temperature is one degrees below zero»?