What should an interpreter do if he/she produces only part of a sentence in interpretation, but gets stuck when the rest of the sentence in the source language is coming up?

A、Ignore the incomplete sentence and concentrate on the interpretation of the next sentence.;

B、Complete the sentence according to the interpreter's general knowledge.;

C、Complete the sentence in translation after he/she hears the whole sentence in the source language.;

D、Say sorry to the audience and ignore it.