Question

Sandy could do nothing but 　　　 to his teacher that he was wrong.?

A.admit　　　　　 B.admitted?

C..admitting　　 D.to admit

 

Answer 1

A

but是介词，后接动词不定式。当谓语动词是do,does或did时，后接不带to的不定式；是其他动词时，后接带to的不定式。谓语是could do nothing，要填动词原形admit。