The police refused to _____ the clues they were working on.

下列句子中加线的成语，运用不正确的一句是（ ）

(2013·四川成都高中毕业班第一次诊断)My mother and her old friends talked of some things and people ________ they remembered in the school.

The cake ______delicious

Do you think I could borrow your dictionary— .