Раскрыть ! the people on the platform (feel) cold as a strong wind (blow). suddenly there (come) a voice from the loudspeaker which (say) that the train (arrive) a quarter of an hour later. mark who (stand) on the platform for half an hour already (decide0 that he (go) to the snack bar and (drink) a cup of hot coffee.

The people on the platform felt cold as a strong wind was blowing.

Suddenly there came a voice from the loudspeaker which said  that the train would arrive a quarter of an hour later.

Mark who had been stading  on the platform for half an hour already decided that he would go to the snack bar and drink a cup of hot coffee.