heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.
Iwishyou________likethat.
Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
Herefusedtotelluswhetherhe________(undertake)thejob.
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
Ihavebeenstudyinghereforfouryears,bynextsummerI________.