The book was written in 1946, _____ the education system has witnessed great changes.
__________I can see,there is only one possible way to keep away from the danger.
We were swimming in the lake__________suddenly the storm started.
—Dad,I’ve finished my assignment. —Good,and__________you play or watch TV,you mustn’t disturb me.
__________I know the money is safe,I shall not worry about it.
He made a mistake,but then he corrected the situation__________it got worse.