The best way to explore _______ countryside is on _______foot.
Our family sat in front of the television on the eve of the Spring Festival, happy___ the Spring Festival Evening Gala.
—I heard they went skiing in the mountains last winter. —It true because there was little snow there.
We at the airport; otherwise we would have arrived home by lunch time.
There is no need for you to go on a diet; you are only slightly overweight ______ your height.
China needs to strike a balance between maintaining a ______ fast and stable development and economic structural adjustment.