If you want to become thinner and healthier. You should eat _______food and take ________exercise.

There is _____pollution and ____fishes in the river now than 20 years ago.

—What’ s the low-carbon life style like? . —Save       energy, produce        carbon.

 The world is getting smaller and smaller because the Internet gets us       .

—I don’t know which skirt was ______, so I took them both.—Yes, it’s really difficult to choose.