By the end of last month, we had sold ____________ as we did last year.
-- How long do you think it will be ______ the bus arrives here?-- No more than five minutes.
Making a proper choice ______ the future will probably make much difference in our life.
In Canada, cross country skiing is a popular sport among people ______ they can enjoy excitement and adventure.
According to what he complained about, something must have gone wrong with the computer, ______?
an important position in a big company, Richard has a good chance to improve himself.