1 ride (现在分词) riding 2 ask (第三人称单数) asks 3 study (第三人称单数) studies
4 close (反义词) open 5 have (第三人称单数) has 6 listen (第三人称单数) listens
7 begin (现在分词) beginning 8 write (现在分词) writing 9 knife (复数) knives
10 woman teacher (复数) women teachers