38. Donkeys and camels are still widely used in some parts of the world _____ of burden.
________ with the size of the whole earth, the biggest ocean does not seem big at all.
He speaks English well indeed, but of course not ________ a native speaker.
To learn English, we should find opportunities to hear English _______ as much as we can.
Using many symbols makes _______ to put much information on a single map.
________ Barbara Jones offers to her fans is honesty and happiness.