With modern equipment，many mysteries have ________ to light in recent years.

_______ could be judged from her eyes that she was terribly sorry for what he had done.

The children had a good time _________Christmas Eve.[ ]

Can you tell me _______ I should wear for the party tonight?—A blue dress, I think. It’s suitable for a party.

There ______ a funny cartoon on CCTV 6 this evening.