________ (fail) several times, they need some encouragement.
Having failed
暂无解析
Ipreferthisdiagram________thatone.
________(fail)severaltimes,theyneedsomeencouragement.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
Herefusedtotelluswhetherhe________(undertake)thejob.
heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.
