conceal

她几乎无法掩饰自己的恼怒。

She could barely ___conceal her irritation.

她设法对所有人隐瞒了她黑暗的秘密。

She had managed to ___conceal her dark secret from everybody.

他试图把钥匙藏在花盆下面。

He tried to ___conceal the key under the flowerpot.