27. The process of producing electricity may also give out CO2, _______ you heat your house with electricity instead of charcoal.
Of all the books on the desk, ______ is of any use for study.
---John, there is _____ Mr.Wilson on the phone for you. ---I’m in _____bath.
_______________, his idea was accepted by all the people at the meeting.
--- Where did you get to know her ? --- It was on the farm _________ we worked.
To avoid the car ______ the child, the driver had to make a sharp turn.