成人英语三级

16.TheteachertoldthestudentsthattheEarth_______roundtheSun.

A.moves

B.moved

C.hasmoved

D.hasbeenmoving

17.Whilethesecretary_______hisdesk,hefoundthelonglostreport.

A.hadbeencleaning

B.iscleaning

C.hasbeencleaning

D.wascleaning

18.Assoonashe______hiserror,Rockfellermadethenecessarycorrectionstohisdatacollected.

A.discovered

B.hasdiscovered

C.discovers

D.haddiscovered

19.Fredbelievedthathisfriend_______byhisemployeramonthorsoago.

A.hadbeenpromoted

B.hasbeenpromoted

C.haspromoted

D.hadpromoted

20.IthinkI'llwaituntilthemail______.

A.shouldcome

B.iscoming

C.comes

D.willcome

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