Which idiom can correctly complete all four sentences?

1.The witness refused to reveal the truth and decided to ________.
2.The company announced the new product only after deciding to ________.
3.The spy managed to ________ until the mission was complete.
4.She smiled but continued to ________ about her future plans.

Answer: B. keep her cards close to her chest

"Keep your cards close to your chest" means to keep your thoughts, plans, or important information secret instead of sharing them with others. In all four sentences, the person or organization chooses not to reveal something. A witness keeps information hidden, a company keeps its product launch confidential, a spy protects secret information during a mission, and a girl does not tell others about her future plans. Therefore, this idiom fits every sentence perfectly.

Answering after opening this box earns no Practice Points.