It was Sunday.The trains were crowded.A gentleman was walking along the 1 looking into the windows and trying to find a place.In one of the 2 he saw a vacant seat.But a small suitcase was lying on 3 and a stout gentleman was sitting next to it.“Is this seat vacant？”“No，it is my friend’s，” 4 the stout gentleman.“He is coming.This is his suitcase.”

1.A.station B.railway C.platform D.hall

2.A.cars B.trains C.boxes D.rooms

3.A.them B.the floor C.it D.window

4.A.asked B.answered C.called D.demanded