A competent speaker of a language must have a(n)________ of these different styles.
—The weather has been very hot and dry. — Yes. If it had rained even a drop, things would be much better now. And my vegetables.
A team of American scientists has found a treatment to protect humans from the deadly H5N1 flu virus, ________ brings great ________ to the world.
Most middle schools prefer to buy _______ desks, so they can change to suit students’ growing height.
Maanshan is ______ most beautiful tourist site and I want to visit it ______ second time next year.
Mind your ____, and thank your friend when you leave the party.