to加一个字母变成另一个单词

　　As chance would have it, John was going to London too, so I went with him.

　　赶巧约翰也去伦敦，所以我跟他一块儿去了。

　　She was looking none too pleased.

　　她看上去一点也不高兴。

　　She explored the sand with her toes.

　　她用脚趾感觉沙的情况。

　　Surprise visits help to keep the staff on their toes.

　　突击巡察有助于使员工常备不懈。

　　I turned around quickly and stepped on his toes.

　　我一个急转身，踩到了他的脚上。