The recent research attempts to the effectiveness of different drugs used for the new virus.
【I felt I would never____the shock of his being worked to death.
The measure of a man’s real character is what he ____ if he ____ he would never be found out.
She is is known as a nosy person—she is always dying to know is going on in others’ lives.
One well of the oil field was still burning with huge fire twisting crazily____ the night sky.
— They are said to have been familiar with each other.— But they_________. They were introduced only hours ago.