Pain is now considered the fifth _____sign, as important as blood pressure, temperature , breathing rate and pulse in determining a person’s health.
The film star wears sunglasses. Therefore, he can go shopping without ______.
We ______ back in the hotel now if you didn't lose the map.
Some people believe ______ has happened before or is happening now will repeat itself in the future.
I found the lecture hard to follow because it ______ when I arrived. started B. was starting C. would start D. had started
--- What time is it? --- I have no idea. But just a minute, I ______ it for you.