If you know the two sentences are different _____ each other, you had better tell us the difference _____ them.
Between the two parts of the concert is an interval,________ the audience can buy ice-cream.
The printer is of good quality. If it ________ break down within the first year, we would repair it at our expense.
They use computers to keep the traffic _________ smoothly.
I got to the office earlier that day,________ the 7:30 train from Paddington.
The manager _______ his workers how to improve the program since 9 am.