It was the training ____ he had as a young man ____ made him such a good engineer.
By improving reading skills, you can read faster and understand more of _______ you read.
Now everyone is concerned about how to conquer the economic crisis, __________is very important for us to preserve our standard of living.
___________ the chapter four times, and I finally understand the author’s theory.
The railway bridge ___________ by 2015 will provide a faster route to transport goods.
-----Do you have enough to __________ all your daily expenses? -----Oh, yes, enough and to spare.