题目

In a small village there was a postman. When he was 20 years old, he started sending all kinds of happy or sad stories to the villagers’ homes 50 kilometers away day after day. Twenty years flew by, and many changes took place, but there were still no trees along the road, only flying dust. “How long shall I go along this dusty road?” As soon as he thought he has to spend his life riding the bike on the road with no flowers or trees, he felt very sad. One day when he finished sending the letters and was ready to return, he passed by a flower shop. “Right, that’s it!” He walked－Will another fifty be enough? －Just twenty will ________. [　　] A．workB．do D．suitD．fit