以d結尾的單詞怎么變復數

　　It wasn't so good as last time.

　　這次不如上次好。

　　A change of job would do you the world of good.

　　換一下工作會對你大有好處。

　　There wasn't much traffic so we made good progress.

　　來往車輛不多，所以我們開得很快。

　　The team put on a good show in the competition.

　　這支隊伍在比賽中有上佳表現。

　　There have been some problems but basically it's a good system.

　　雖然出現過一些問題，但這基本上仍不失為一個好系統。