Complete the sentence with the best relative pronouns respectively: “Albert Sabin, ____ has never won a Nobel Prize, invented an oral vaccine ____ prevents the poliomyelitis.” Complete the sentence with the best relative pronouns respectively: “Albert Sabin, ____ has never won a Nobel Prize, invented an oral vaccine ____ prevents the poliomyelitis.”

Complete the sentence with the best relative pronouns...

Q485547

Complete the sentence with the best relative pronouns respectively:

“Albert Sabin, ____ has never won a Nobel Prize, invented an oral vaccine ____ prevents the poliomyelitis.”

who / what.

who / which.

whom / which.

which / that.