-I drove to Zhuhai for the air show last week.-Is that _________ you had a few days off ?
She has been __________ of the danger of driving the car in that state.
My parents live in a small village. They always keep some candles in the house __________ there is a power off.
We've worked out a method __________ our production can be greatly raised.
Part of the reason Charles Dickens loved his own novel, David Copper field, was __________ it was rather closely modeled on his own life.
It has been proved __________ eating vegetables in childhood helps to protect you against serious illnesses in later life.