Pain is now considered the fifth _____sign, as important as blood pressure, temperature , breathing rate and pulse in determining a person’s health.
Come and visit me whenever _______.
---Will Tony come to the party tonight? ---I’m not sure. He _______stay at home preparing for the coming exam.
The house I grew up _______ has been pulled down and replaced by a hospital.
______ the project in time, the staff have been working at weekends since last summer.
---Why do you keep looking back? ---I have a feeling that we _______.