Catherine is one of the brightest students who from the Department of Computer Science , Brown University .
. My parents live in a small village. They always keep candles in the house __________ there is a power cut.
.Many of them turned a deaf ear to his advice, __________ they knew it to be valuable.
. It is difficult for us to learn a lesson in life __________ we’ve actually had that lesson.
.__________ he had not hurt his leg, John would have won the race.
.I won’t call you, __________ something unexpected happens.