It is said that bad living habits as well as dirty surroundings, stuffy rooms and some other factors ________ the wide spread of H1N1.
What mobile phones will look like in a year or two is easy to guess—they will be slimmer and probably will let you watch television________.
It remains to be seen whether the plan which has been approved can be ________.It depends on your determination.
Which do you enjoy ________your weekend,swimming or fishing.
—Nowadays a growing number of people go to work by bike. —Bicycling is good exercise;________it doesn't pollute the air.
Not until we saw the manager did we know that the bank ________the company for the purpose of reducing its borrowings.